the Regal was the car to beat after the redesign in 81.. they were more aerodynamic than anything else on the track, and they won a lot of races as a result... the Fox bodied Thunderbird, the Monte SS, and the Grand Prix 2+2 were all made to be better than the Regal on the high banks of the NASCAR speedways... that's just how things worked back then- if they wanted to win, they built a better car and sold it to the public to make it legal for NASCAR homologation.