I have a 91. That bone stock TBI 350 sure isn't short on power. I took a video today of the truck throwing roost over 40' high and 60' back with 44" boggers. The NP241 has the deepest reduction of any t-case offered in a blazer and is marginally stronger than a 208, and you can add a S.Y.E. kit to it like I did. I'm very pleased with the TBI vs. my carbed 496 in my other truck. I don't have to worry about the carb flooding out over big bumps and steep hills now. The other day I had a dual 2 1/4 exhaust with a crossover pipe and 3" 40 series flowmasters (that I had laying around) put on, and it sounds and runs like a completely different truck. In the future when I go back to 400/205 I'll run a mean TBI big block via holley or the like, but in stock form it's got to be the best set up out there.