i want to put a 10 wide wheel and and at least a 295 50 15 possibly a 325 50 15 under our challenger
i was under the impression that if i used a 66-67 b body rear and offset hangers i could do this
i have found a 66 8 3/4 rear but have also see a digram that list all mopar cars(mid 60-70s) rear end measurments
acording to it there is no differance at all from a 66-67 b body rear then a 68-70 b body
also thought the overall width was same but the perches were closer togeather????
so one final time
can i put this rearend under car with that wheel/tire i do not want to have to cut and reweld the spring perches
thanks

The correct dimensions:

http://www.moparts.org/Tech/Archive/axle/16.html

This combination usually works best:

1. '65-'67 B-body rearend
2. 10" wheels with 5" of backspacing
3. DoctorDiff 1" offset spring hanger/shackle kit

You do not have to move the spring perches

Your Challenger will look like this with 325/50/15s.

The slightly wider '68-'70 B-body rearends also bolt in, but the optimal backspacing on a 10" wheel is around 5.25".

Most off-the-shelf wheels are available in 5" or 5 1/2" backspacing.

The exhaust system is from TTI, including the headers. The exhaust is 3 inch,the only trouble i had is i needed to have a longer rubber brake line made.

another

I used the same with the Dr Diff kit and a 67 B body 8 3/4. Worked great. I had to move my fuel line is a bit because the spring rubbed on it a slightly.

The car has 275 on the rear

Thanks, Both of those cars are awsome. I'm not going to use 10" rims so I think the 69 unit I have will work for me.

is a 68-69 b body rear housing wider then one from a 67 b body or is it the spring perches in differnt spots