quick question.short answer plz

Hmmm I had a 15 x 8 ralley , custom made 4 5/8 backspace , with a G-60-15 , on the back of a stock 8 3/4 rear , 68 Valiant. On the back of my 70 Duster , these same wheels and tires almost hit the springs. One side of my Duster is different than the other by a good 1/8 of an inch.

Frank