knock on the engine, the tranny the tune not being for a 3.0
and power idk its all on how it likes the boost
how much is he asking for it you have any pics link the the post on craigslist?

and the 97 also has odd pcms (ask FoSHo99) he can confirm for that lol
and i would just do a filter off the supercharger if you get it retuned...