I agree, and you can tell what extra tranny you have by looking at the stick. Straight stick=t176=good.... Curved stick=t4/sr4=bad . I have a T176 in one of CJ's, and a T5 in the other. I like the 4 speed a LOT more. It will go the same speeds on the highway, but the gas milage isn't quite as good (if you've got a jeep as a highway vehicle/ good gas milage you need to seek professional help). Best thing about the 4 speed is that when I'm going up and down hills, the 5th gear is worthless, and i'm constantly downshifting to 4th, then upshifting. I live in the Ozarks, so that turns into a lot of shifting. The 4 speed will pull just fine, and the 4 speed gets better milage at highway speeds than the 5 speed gets when I'm unable to use 5th gear (when I have to leave the 5 speed in 4th gear). If you live in flat lands, and the 4 speed has a curved shifter, get the T5 fixed, otherwise I would put the 4 speed in. Another benefit of the T5 is the ultra low 1st gear, so take that into consideration too. I personally think the 4 speed in 1st hear/ 4 low is lower than I'll ever need.
85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT
85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO