Well.. after three years of running a well clapped out 220,000 mile motor in my '89 with puegot tranny, 3.5" lift, 3.07 gears, 235's and towing a trailer usually weighing in around 3500#'s - 6000#'s.. I decided to rebuild the motor, swap the axles with ones out of a 90 limited (non vaccum)...