one last time about 8 3/4 rear for fat tires

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.

Quote:

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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

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Doc I thought it was the 68-69 b-body that swapped in without moving the perches and using your offset hangers. Or will they all b-body work that way. I bought a 69 8 3/4 to put in my challenger because of a previous post on this. Is it the size of the rims that makes the 65-67 better?