Ok so I own a 70 duster, /6 auto. Drum brakes, 7 1/4 rear. I have tried doing a little searching And haven't had very much luck so sorry for the noob question.. But the question is I found a 73-76 solid parts car it's got bucket seats, disc brakes, v8, v8 k member. and a 8 3/4. As I understand the only difference between a 70 and a 73+ is basically cosmetic sheet metal correct? Will these key parts bolt in with minimal issues? Any guidance would be greatly appreciated.. Thank you much