99+ Intake manifold

[JeepSpeed]

Hi all,

Alright, before I even start this I have to say I am not a newbie, I performed a search, had trouble with it because of the number 99 for some reason, and couldn't find it. So anyway,what's this I hear about the 99+ intake manifold. I know they changed them, but are peeps switching them in older rigs for performance? Is that where the 4.0 picked up those three or so ponies? I'm looking to open up the intake and exhaust as much as possible, and I like the way a better breathing manifold sounds. If this is true, does it just bolt right up, or is there trouble with the ODBII and ODBIII matching up? (I have a 94') Also, if all other answers are lookin good, where can I get one? Seems like the stealership would charge me a large one for every nut and bolt, I'd rather there was somewhere else. (Plz don't say boneyard, Ive never once seen a 4.0L XJ in any by me, especially not a 99+) And finally, thanks for reading my long ass post and answering my barrage of questions.