I travel the HY a lot and for now I'm sticking to the 1 3/4 inches the Jeep TJ spacers provide. The body lift will not affect the stability at all. With the Sammy all you need is a spring over and some 31's. Jeeps will need lockers and 33's to keep up with your Sammy with this set-up. If you put some LSD in the front and rear, well, there is no stopping you. The only thing I hated about the Sammy was HY speed, it just does not cut it with the 1.3 engine. The 1.6 would help it quite well. My friend in Puerto Rico put some 3cylinder pistons from a Suzuki SA 310 between 1985 and 1988 model (kind of like a Metro) and the 1.3 engige with an aftermarket can stood from the front when he took off on 4wd Lo. We just freaked out at the power this engine can muster up.