I do not have the information on all 77 1971 Hemi Challengers built but here is some information or known information on these cars.

1971 Challenger


FC7==10==12.98 %-----10.0 % for all Challengers
TX9===8==10.38 %------2.0 % for all Challengers

Because of the 1971 Challenger Brouchure with a Purple car on the front I would expect a lot of people would of ordered FC7. TX9 I would also expect a lot of people would order this color being their personal preference with a Hemi, but Dealerships would not order this color with a Hemi. With 1971 Challengers Mr. Norms went down the list ordering colors one auto, one stick they sold almost half of the 14 Automatic 1971 Hemi Challengers built.