Well I must say that with my Dad tuning and helping with the performance aspect of my Vette, there wont be many Porsche's passing it. Here is a little of what my Dad has done (of course I have helped where I could)

This is that 70 camaro Z06. It a 70 Camaro with a LS6 out of a Z06 Corvette.

This car went on the Hot Rod PowerTour this year and when Magnuson saw it they asked if they could display it at every stop on the tour in front of their trailer with their other cars. I believe this is the only one they didn't build themselves.

Here is the Chevy II. Its got a LS1 out of a Corvette. There is no chrome on this motor, its all polished aluminum.