cj8 tub on the cj10 is not a bad idea
33's without engineering
id be using the sd33t, and getting rid of the std cj10 tranny,
there are alloy cj8 tubs available
http://www.aqualu.com/jeep-bodies.html
measure the distance from the guard firewall join to the centre of the rear axle on the cj10 and compare it with the cj8 tub would be the first step