ok i searched this chit but wading thru endless pages of useless info get damn old. ok i have access to a 91 cherokee 4.0 auto for converting my 258 into efi. my question is, are all the sensors in the head, that i will need, or does the 4.0 block have provisions for accomidating f.i sensors. i would rob the fuel tank, ecm and the head/intake. to make things easy i want to use the hesco wiring harness, and i know i need the cps, as i might even rob the auto out of it. or i might just say fawk it and do a tbi conversion, which would be so much easier to do and just rob the hei off of the 4.0. is the jeep efi that much better that tbi?