Rogers has been famed as a talent spotter with a number of drivers finding their feet within GRM, including Steven Richards, Jason Bargwanna, Garth Tander, Jamie Whincup, Lee Holdsworth and Scott McLaughlin.

Around this time, in late 1978, Rogers also moved into the Australian Touring Car Championship as a privateer in an ex-Bob Jane Holden Torana.

After qualifying 22nd, O'Brien started the race, but the car was struck down by a slipping clutch which led to its retirement after just 19 laps with Rogers not actually getting to drive.

Rogers had originally wanted Mario to drive with him at Bathurst, hoping his high-profile would help land a major sponsor, but the 1978 World Champion was unavailable and suggested his nephew as a replacement.

Unfortunately though, the younger Andretti was recovering from a broken leg (he still needed crutches outside of the car), continued the tradition of American drivers not having a good Bathurst record and on lap 37 put the Commodore into the wall at Reid Park.

GRM joined the fledgling Australian Super Touring Championship in 1995 with young lead driver Steven Richards driving the team's Alfa Romeo 155.

In 1995 the team replaced the Alfa with a Honda Accord and Richards used it to win the Privateers Cup and place fifth in the championship behind the two factory supported BMW and Audi drivers.

[6] Richards went to England for a test drive with the Nissan team in the British Touring Car Championship and was replaced by 1997 Australian Formula Ford champion Garth Tander.

[14] McConville took the team's first round win in two years in controversial circumstances at Winton when he passed Rick Kelly on the second last corner of the race just after the end of a yellow flag zone.

Lee Holdsworth also joined the team in 2006, as well as driving in the final round of 2005, with McConville moving to Paul Weel Racing.

Holdsworth was involved in a serious crash in Round 4 at Winton when his car slid off the circuit and went backwards into the wall at high speed.

The team was only able to achieve three podium results, with Holdsworth finishing second at Hamilton and at Winton and third at the 2011 Gold Coast 600, driving with Frenchman Simon Pagenaud.

[29] Under the new New Generation V8 Supercar regulations, the team performed strongly at the start of the year with Prémat and McLaughlin finishing fourth and sixth respectively in the first race of the season at the Clipsal 500.

[36] While Dahlgren largely struggled, McLaughlin achieved considerable success, winning four races and the 2014 Plus Fitness Phillip Island 400 event on the way to finishing fifth in the championship.

[39] On track, after a winless 2015 the team returned to form at the 2016 WD-40 Phillip Island SuperSprint with McLaughlin winning both races over the weekend, and ultimately finishing 3rd in the drivers' championship.

[41][42] The team only scored a single podium at Phillip Island, with Tander, as well as adding James Golding as a wildcard throughout the year.

[46] No podiums came from the team as Stanaway was forced to withdraw from the last race at Winton to Queensland Raceway, due to a pre-existing neck injury sustained in a Formula 3 accident years ago, with Chris Pither for Winton and Darwin while Michael Caruso made a one-off return to the team at Queensland Raceway.

[47][48] In mid October 2019, Garry Rogers announced that they won't be returning to the Supercars grid for the 2020 season, citing escalating costs of competing and a model that required them to purchase parts rather than develop them as the reasons for his decision to withdraw from the series.

[49] At the end of the season, Richie Stanaway announced his retirement from motorsport altogether and James Golding went to Charlie Schwerkolt's Team 18 as a Co-Driver for the Enduro Cup.

[54][55] They will also increase their presence through the series as GRM Customer Racing, with an Alfa Romeo Giulietta Veloce and a Peuegot 308 driven by Jordan Cox and Jason Bargwanna respectively,[56][57] and Team Valvoline GRM, who also runs with an Alfa Romeo Giulietta Veloce and a Peuegot 308 driven by Michael Caruso and Aaron Cameron respectively.

The car ran a GRM developed version of the Chevrolet Corvette C5-R's 7.0 litre (427 cui) motor which had taken numerous class wins in the 24 Hours of Le Mans.

In its race debut, the 2002 Bathurst 24 Hour, Tander qualified the bright yellow #427 car (nicknamed the "Nuclear banana") in second place behind the N-GT Ferrari F360 driven by Brad Jones.

Then, just a few hours into the race, the entire fuel cell of the Monaro needed to be replaced, dropping the car 13 laps behind the Porsche.

The team overcame the fuel cell problem as well as the car becoming jammed between gears just before sunrise after Nathan Pretty was hit by the BMW 318i of Debbie Chapman in The Chase, which also caused damage to the driver's side door.

Upon its return to the track Darren Palmer put the car into the wall at Griffin's Bend with no steering, a legacy of the Grice crash.

The Monaro, driven by Tander, Pretty, Steven Richards and Cameron McConville, ran in the lead for the last five hours to win the race by 24 laps from the British entered Mosler of Martin Short.

It was this second car which won the 2003 Bathurst 24 Hour with Jason Bright, Todd Kelly and Greg Murphy sharing the driving with Brock.

After the teams 1-2 finish in the 2003 Bathurst 24 Hour, Garry Rogers said in an interview with Australian Muscle Car (AMC) Magazine that with the restrictions that PROCAR forced the team to have on the 7.0 litre V8s, such as induction and rev limits, he believed the cars would actually have been faster using the smaller Gen III production based engine which would have been almost restriction free, as seen with the Mosler MT900R which used the 5.7 litre motor.

He also refuted that having a professional team such as GRM made the car unbeatable at Bathurst, stating that had anyone built a V10 Viper to at least the same standards and had professional drivers like the Monaros instead of part-timers and gentlemen drivers, then "nobody would have seen which way they went", as during the Nations Cup Championship, Greg Crick's privately entered Viper had shown on a small budget that it was capable of beating the Monaros.

The 2003 Bathurst 24 Hour winner is currently owned by a historic car racing enthusiast, the third Monaro driven by James Brock was placed under auction on 20 February 2020.