need help
need some help with building my prostreet truck...first off it is a 69 chevy swb on a 71 chassis, i have cut the floor of the bed to the frame ,have my tubs welded already,i have 15x12 rims with 29/15.5/15 mickeys,i put them on the truck and the tires stick out like 2inches past the bed..i am trying to figure out backspacing..i do not really want to cut the rearend..trying to do this on a budget...any help is greatly appreciated