Hi to all, I have a 71' demon 4spd build date 4-71 and the motor 1-71. What exhaust manifolds orignally would have come on this.
I see 3418623 and 3418621 as a pair, also 2863549 and 2863553 (Hi-po?) as a pair along with other combos?
Were the high performance ones available for this car and how...