Hello everyone, I have a '71 Charger with an 8 3/4 rear. It has a 489 case sure grip third member in it.

I picked up some 15x10 rims with only 3.5" of backspace that I want to put on it, and I have a lead on a rear end housing out of a '69 charger that is 3" narrower than the '71 housing that I have, so the rear tires wouldnt stick out like Joe Dirt.

My question is, besides relocating the spring perches, how difficult would it be to swap the two housings? I ran a search and didnt come up with anything, so I was hoping someone had done this before.

Thanks in advance!!