March Engineering, Pepe Romero, Leon Bros, Blue Thunder Racing
run by Al Holbert, who took the first history in a March. Sold to Pepe Romero, nicknamed Penelope. Sold to Al and Art Leon, who did not enjoy any success. Reappeared under Marty Hinze banner, for one race. Rent by Ralph Sanchez for the Miami 1984 race, it would be run by Bill Whittington and Randy Lanier. The latter took the IMSA crown.