MacDonald made his NASCAR debut in 1986 at Oxford Plains Speedway, finishing 26th after his cooling fan expired.
He also made his Craftsman Truck Series debut that year, finishing 30th at North Wilkesboro Speedway for Manison Motorsports.
He also made his most recent attempt at a Cup race, when he missed the field at Martinsville in the #85 sponsored by Big Daddy's BBQ Sauce.
He began 1999 hoping to run full-time with Greenfield, but sponsorship opportunities did not come through, and he ran three races with Marty Walsh and Rick Ware.
In 2000, MacDonald got sponsorship on his truck from 3M and was able to make his first full-time schedule in NASCAR, posting a sixth-place run at Daytona and finishing 19th in points.
MacDonald returned in 2002, and split the year between his own team and Troxell Racing, finishing 19th in points.
81 in 2008 were Brad Baker, Bryan Clauson, Kevin Hamlin, Bobby Hillin Jr., Shane Huffman, and PJ Jones.
Blake Koch drove for the team in 2011; in 2012, American Majority joined as sponsor, with Jason Bowles driving the No.