4.3

So I just got a 94 yj with the 2.5 and An automatic it's great off road in 4 wd but lacks power in 2wd so here is my ? I have several motors and transmissions I have a grand Cherokee 2wd with the 4.0 and AT , a 86 chevy blazer S-10 4x4 with the 2.8 v6 5 speed , 96 gmc jimmy 2wd 4.3 with AT , a...