[2] WISSOTA Midwest Modifieds are similar to Street Stocks in that their engine is a maximum 355c.i.d., however, they are open wheeled (No fenders) and have a minimum weight of 2600 lbs (1,179 kg).

This class is similar in appearance as a WISSOTA Midwest Modified with the exception of some cosmetic differences.

However, the WISSOTA Modified class has a minimum weight of 2450 lbs (1,111 kg) and can run a Manual Transmission, a Spec Engine (Turning out up to 600-650 hp), and an alcohol fuel option.

In 1955, #37 Raoul "The Flying Frenchman" Cayer of Nestor Falls, Ontario won his first championship at the Emo Speedway and also took honours as the time trial champion in that year.

In 1968, the underdog of the Emo Speedway, #33 George Oltsher [5] would be triumphant in beating the much bigger competition to win his first championship of three he would earn.

1969 saw owner Ed Rea with his driver #38 Mike Andrusco[5] win the championship in the last season of the 1960s.

1970 saw #33 George Oltsher return to the champions circle at the end of the season, the last year in which there was only one class of cars.

The first Hobby Stock Champion was #1 Borden Beeler[5] in 1971, while #36 Larry Long[5] of International Falls, MN would win the top class.

The cars were slower but became an affordable entry level class for teenagers and young adults to get into racing.

Driving partners #7 Scott Gobeil and Donnie May would become the season champions of the new class at the Emo Speedway.

The appearance of the car had a short wheelbase, two wings (on top and in the front) and ran a snowmobile engine that turned out a maximum 600cc.

At the end of 2004, after eleven seasons of Mini-Sprints, the class was canceled due to a severe shortage of cars.

Mini-Sprint driver #2X4 Ken Perry[5] would win the last championship for the Mini-Sprints, while #11 Anthony Visser,[5] (Former Street Stock and Thunder Stock racer) won the inaugural WISSOTA Midwest Modified Championship.

2R Ricky Roche (1996–1998), #33 Kendal Gamsby (2006–2008), and #16 Gavin Paull (2011-2013) and #2X4 Ken Perry (1998-2000) have three championships in a row.

#14C Cody Ossachuk, #99 Brody Strachan, #16 Gavin Paull and #2X4 Ken Perry have the next number of championships at five, #17 Christopher Leek, #19 John Hettinga and #33 Kendal Gamsby with four.

WISSOTA Super Stocks were run in 1996 and 1997, #5 Steve Boyum of International Falls was the 1996 Champion.