ok sunder its like this.... all i want outta the jeep right now is to run good... its hard to do with the setup i have thats why i bought the 4.0 donor... now down the road ... and i mean way down the road im gonna combine the 2 to make a stroker.... but as of right now it seems just swaping the 4.0 will suffice... im not a power junkie... i have never really needed more power from my jeeps(s) engines... just this is my 1st with the carter BBD and i hate the way it runs ... so this upgrade seems to be a smart move... allthough there are some different set ups going on.... i used to be that "rich" kid that never had to worry now "im the working man" that has to pay ..... i want to best result for what im doing or trying to do...... i have a 90 YJ with a carter.........and i have a 93 EFI from a YJ just sitting ... it came froma friends jeep thats still running<<< so yes its a good core... I just want to know whats the best optional upgrade ..... i kinda know what to do ... i just want my damn jeep to run..... i live in dallas and whilemi can go for a different carb it will not pass inspection... its not my DD but i still want it street legal <img src="/forums/images/graemlins/butwiggle.gif" alt="" />