B body 8 3/4 in early A w/ PICS

I finally got around to getting my early b body rear in my dart. few deails

You HAVE to move the spring perches in about a half inch. I forget the actual measurement.
I also has SS springs, but I believe you could get it to work with a bit of fender rolling.
My cragars are 15x7 with a 4" backspace and 205/55/15 tires.

(please ignore the primer, I just replaced both quarter panels and trunks floor)