15x10 on Duster

This link http://www.forabodiesonly.com/mopar/archive/index.php/t-30453.html

Shows a fellow member that has 15x10 with a 10in tire with no mods on his A body rear. I have a B body rear does this mean since he has 15x10 with 4.5 back space that with 6.5 I would beable to fit 15x10?