I was wanting to know if someone could give me a lil info on a manifold swap. I have a 93 4.0 cherokee and i keep hearing about doing a 99+ manifold swap. What's the deal? will it just bolt on? how doest it help? has anyone done it? was it worth the work and money? so many question, so slow at typing. lol. any info would be allsome.

 

I'll have to did up the pics for it.

But the 99+ has a better flow shape to make up for the restrictive head they put on them to meet emissions.

Yes it's a direct swap, BUT you'll also need the power steering pump brackets. It's like a 15-25 HP boost. I can't recall all the numbers but I seem to remember reading some where that with the intake, cold air intacka nd a header you can boost about 45HP and 65 foot pounds of torq.