I've got an 88 Sammy, SPOA 6 inch lift, 3.5" Bonz Shackles, Rear EZ lockers, 4.16 low gears, Calmini OTS steering, 31" Truxus tires, Tri Mil header, Cherry Bomb muffler with 2 " exhaust
With the 4.16 gears, it crawls very well, but still gets me to 55 mph on a flat or downhill road in 5th gear. The header and 2" exhaust with Cherry bomb help out the little 1.3L stock engine. I don't think I would put higher than 31" tires with my set up. That's just my 2 cents worth.