Thanks Bob, good advice. I have access to a Snap-On leak down testor so I may just test it myself. Seems like that's the only way to tell for sure. I could also get a print-out on the service history from a friend at the local dealership. That would tell the story as well.
My wife is pushing to sell the car because she wants a 330. I like the V8 myself, we'll see who wins....