what to do wheel will not fit

i have a 63 a body dart i put in a 67 b body rear end housing measures 53" flange to flange the a body housing measures 52 5/8" but the b body axles must stick out further because cant get my 15x7 steel wheels to clear has anyone run into this problem ? low budget build so a body housing to expensive what size rims and tires did you use need something that will get some traction 410 gear 550 hp 340 thanks