badd1racing

im tubbin out a 73 camaro and need a little help with rearend length it has 28 inch frame im thinking 40 axle flange to axle flange 17 inch tire with 5 inch bs so i would need about 35 inch cut end to end for a ford 9 about 5 inch for axles right? and how much tire to frame clearance is safe? thanx and i am lookin for on a ad i posted for mock up 15x15 31-33 5 inch BS 17 inch wide