A similar question as a very recent poster. I have a 10 bolt now in my 70 chevelle, looking for a 12 bolt posi from a 70 chevelle to put in. Asuming i find one, can i run 10 inch rims? if so what kind of back spacing am i looking at? would like to run pretty big fattys like maybe a 275 50 tire. by the way looking at a 15 inch rim. did it on my 72 but never knew the backspacing on those rims. sorry if the question is repetitive but im kinda new. thanks for any help
anthony