i should be getting a jeep grand cherokee laredo with the 4.0 inline 6. and one of my co-workers says that it's possible to turbo one and that there is a turbo kit out there somewhere for it. i don't know if it's true or not but it would be nice.

Anything is possible but i've never seen one.

I thought about this last summer and the biggest problem to do it myself would be getting a custom header made

A centrifugal blower kit (Paxton) is more likely to be availalbe