Hotchkis tvs system questions
Actually it is a 69 charger rear that I found. So I'm going to need to get offset shackles or something soon for it.
You'll need to move the spring perches to use the B-body rear.
I run a 68-70 B body rear in my Duster as well, it's actually a much better fit for the Duster body than the A-body rear. But at the very least you'll need to move the perches from 44" on center like they are now to 43" c-c. I would not suggest using offset shackles "backwards" to attempt to get away with not moving the spring perches.
I used 1/2" offset hangers/shackles to move the perches in another 1/2" as they're intended, to make the spring perches 42" c-c. That gives you as much room in the back as you can get without doing a mini-tub. I figured since I had to move the perches anyway I might as well get the offset kit. Dr. Diff sells a nice 1/2" offset kit.
If you choose to go with the A-body perch width of 43"c-c you can use a 15x8 with ~5.5 to 5.75" backspace. A 15x9" would need ~6" to 6.25" backspacing. You'd still be stuck with a 275/60/15 as about the biggest tire you could safely run without trimming the inner quarter lip.
If you use a 1/2" offset kit and 42" c-c perches you can get a 10" wide rim in there with a 7" backspace. I'm running 295/35/18's on my car with 18x10's, although I did have to do a little trimming on the inner quarter lip to make sure nothing rubbed.
