Don would have Don Hardy Race Cars build his new Mustang II. Starting with an acid dipped body in white, Hardy would incorporate the latest chassis innovations while Don and Earl Wade went to work on the Cleveland. CJ Batten worked over large ports of the Cleveland heads while Dyno worked over the poorly designed oiling system that gave every Pro Stock racers fits. The Mustang ran a 9.03 at its Gatornationals debut. Wins were harder to come by as competition, namely from other Fords of Bob Glidden and Gapp & Roush was tighter. Don would runner-up with the Mustang at the NHRA U.S. Nationals and win one IHRA national event. Don would race the Mustang II through 1975 and win three more national events that year.