I'm sure this has been covered before, but I am currently gathering parts to swap an LS in place of my 350 TBI in my 91 YJ. The LS is out of an 04 suburban which is DBW. My plan is to swap the TB to DBC, I have one guy who tunes/cuts down harnesses saying there's only 2 different computer service numbers I can use. I will update later, I have the last 4 of both service numbers written down. I have another guy, who tunes saying there's several that I can use, also that I can tell if mine is useable if I have the "chip"... anybody help me with the placement of this chip/what I'm looking for? The second guy also said something about IAC, not exactly sure what I'm looking for to tell if I'm good with the computer (came out with the motor) I have or if I'm going to need a different one, any help is appreciated.