Narrowed A body rear questions.

I'm doing the same on a 69 Valiant. Only I got a new 9" Ford from Strange, the wheels i'm using have a 3-3/4 back space, axle over all lengh is 50-3/4 axle flange to axle flange.
http://www.forabodiesonly.com/mopar/showthread.php?t=116288&page=3

Thanks, oink, oink! ha, ha.
I checked out your build thread and looks like you are having too much fun with the welding skills.....nice work, nice build.