I fit 32 11.50 on my 82 when it was stock and still had a little room, no rubbing or anything. so you could probably get away with a 1" body lift, i got one for $60 from sky manufacturing, and some extended shackles. Currently i have a 3" pro comp lift that works fine with 33 12.50 and doesn't sit to high but it also doesn't flex well
but whatevs. good luck on your lifting quest