I never got the throttle body from the 4.0 so I am missing some here. I got the rock it intake tube kit, a throttle body spacer ,a flowmaster muffler, and a banks tourque tube header. In a previous post I mentioned the header did not do anything. I was wrong , now that I remember it kept the air flowing , it completed the intake modifications. Not too noticeable but instead of losing power on hills drastically it kind of maintained a steady, better speed than prior, even prior to me having big tires and mods come to think of it. I should get the exhaust upgraded to a 2 1/2 diameter next. But I saw that electric turbo from "street feakz" on J.C whitney for $350.00 and wonder if it will fit my GP's intake. It says 16-54 hp increase. 16 horses aint bad i reckon.
