here's more info to chew on.
my buddy has a '97 XJ - the throttle body is about 3.000 diameter. i have a '93 ZJ and the throttle body is 3.363 diameter.
check out your throttle bodies sometime. there is a step behind the butterfly. i bought a spare one and had that diameter bored out - so it is straight thru - no step. it adds some HP. not enormous amounts but some. if anyone is interested, i had my old one bored out too (i work in a machine shop - engineer). i can let it go for $75 + shipping, if anyone is interested. it's the same thing Jeepers & Creepers does to theirs. they charge you a core charge plus to shipping charges (1 to get the new one and 1 to get the core charge back). plus they want $100 + $125 core charge. i cost, with me, and you are done. i also had mine ultrasonically cleaned.
but check your intake diameter to make sure it fits right. or you could have your intake opened up and bolt this in. a little extra power.
SORRY!!! new to this board
and didn't see the swap board. delete or move this if necessary!!!