I dont think any one makes a turbo kit for the 2.5L that's striaight for Jeeps; there are several companies that make superchargers though.
You may want to look into the turbochargers for 2.5L Dodge Dakotas - they have a good performance following and it's the same engine. You just may have to screw around with custom plumbing and what not.
edit: There's a few guys on pirate4x4.com that have gone this way, and are very happy with the results. Just remember to post your questions in the newbie Jeep forum first, not the hardcore jeep forum (trust me on this