[StuM]

Thanks guys. As expected this is not an easy sb/bb..., stroker, etc., type question. I appreciate the comments re power and control. I ran my M5 at Sears Point last year at a Russel HiPo driving school. Very helpful! Stable now includes '02 M3-SMG, '02 RT/10 Viper and '01 Lightening so use of high power on the street is well appreciated. The new SPF will just bring it back to a more basic and pure level. It's the 20-something son who I'm concerned about!!!