This is with Randy Pobst right? Randy is a god to me! One of the most sought after racers around, a very nice guy and started in SCCA racing, like me

The stock Mustang GT has a lot of nose dive and the stock suspension is not world class - I say stock, because what he specifically talks about is easily fixed.
Really listen to what he is saying about both cars. The Mustang is more predictable, which makes it easier to drive hard and more fun. The M3 is a very high-revving engine - I think an 8,500 RPM red line and no torque until 4,500 RPM. It also
understeers - which is not a good thing for a RWD car with power. As someone who has beat the crap out of both of these cars on the track, I would not buy an M3 for $70,000 plus.
After I get your butt on the track in my Mustang Jon, the only time you'll think about Bavaria is if you're drinking beer.