Good point, you might look at 1 ton axles, moving the rear axle way back, cutting the rear fender openings, and maybe going to a four link or 80 suspension as the leafs wont have anywhere to connect too. i dont know how much room the engine compartment will have, you might want to get a tape measure and start there, you can always lift the body for a bit of clearance, or a hood scoop to help clear things or mount the batteries or even rad in the rear of it if its going to be a mudder.Holy how long is that? I know that if one put the 1HD-T in a 40 there rear driveshaft would be damn short like not functional might have to move the rear axle back quite a bit. The 1HD-T combo with auto and tcase is roughly 76 inches long from ballancer to output flange. And a 40 wheelbase is about 90 inches.