For 2021, Top Gun participated in a test at World Wide Technology Raceway in May, with Enerson driving the #75 Dallara-Chevrolet, which had a throwback livery to the Johnny Lightning-sponsored cars that Al Unser and Vel’s Parnelli Jones Racing used to win the Indianapolis 500 in 1970. Following this, they officially entered the Indianapolis 500. The team used two chassis' owned by the driver (R. C. Enerson) and his father Neil Enerson. The deal struck between the Enerson's and the team included the loan of the two chassis' as well as the use of an Enerson-owned race transporter and other race equipment, with the agreement that all would be returned to the Enerson's at the end of the season.
