4" lift works with 32's as long as you don't bounce the front to bad. Had them on mine and crunched the fenders in front of the doors. I cut the fenders and went to 33's plenty of room. Also had to change the gearing to 4.56 with the 32's. 5th gear was pretty useless with the 84 2.8. The 2.9 with the extra hp would probable be fine.