Pro-Street Advice Please

[texassquarebodies]

I am in the process of rebuilding a 1982 short bed that my Dad and I built when I was in high school--early 90's. It has not been on the road since 99'. I have it running now, close to driveable. Always wanted to tub it.

I need some advice on doin the old school pro street thing. I'm talking 15" wheels here boys-no 20's for me. I want to run a 15x14 rally in the rear with a 29x18 Sportsman S/R radial tires. I don't want the tire to poke much past the rim much.

Should I get my tires and wheels first and then have my rear narrowed?
What back spacing do I need on the wheels?? How much do I narrow my rearend??? I'm putting the leafs on the inside of the frame rails. Do I just swap sides??

Any help would be great appreciative.