Before you go to these extremes, I'd first recommend changing the fuel filter, replacing the plugs with premium plugs, and also changing ALL the engine related fluids. This includes the oil, coolant, power steering fluid and break fluid while your are at it.

This will probably make the biggest improvements.

Next I'd recommend changing the air filter to at least a new filter or the drop in K&N.

Then I'd recommend replacing the transmission, transfer case, and differential fluids.

After you've done all these and you still want more power, then start making the mods to the exhaust, polishing the intake and exhaust ports, and adding the K&N cone filter with a box designed to make it a cold air intake.

Logansportage <img src="/forums/images/graemlins/patriot.gif" alt="" />