I agree with Jeph. I was on another thread talking about over-revving these motors and how that's not a good idea. A couple of people wrote back saying if these cars couldn't take banging off the rev limiter or shifting at redline repeatedly they aren't worth the cost of owning one. They, of course, don't care about their cars in my opinion. Abuse is abuse and you will pay the price for it. With that said, buying any
used car without checking it out first "thoroughly" is like picking up a girl at the neighborhood dive and having her tell you she doesn't have any STD's.
Good thing about Porsche though, you can look into the diagnostics and see the abuse. Those are the cars you stay away from.