Novak Conversions Jeep Wrangler YJ engine mounts

Wheel size

I don't think so without a lift, I have 32" with 3" lift and they just make it, the rear sometime slightly rub when offroad.
 
I have 33 x 12.5 on 15" Pro Comp offset wheels with a 4" lift without any issues. But, for any serious off roading you'll need 4" of lift.

9429-1487p-E-E.jpg
 
Novak Conversions Jeep Wrangler YJ engine mounts