The M3 is an incredible car. BMW's are an excellent marque. I remember when I was in Europe that the fastest damn cars on the autobahn were BMW's. My wife's best friend's dad (follow that?) has an '83 635CSi with a manual transmission that is in pristine condition and he is selling it. I want to buy it, but must resist that temptation. Shouldn't be too difficult with my bank account and mutual funds in their current, sorry-*** condition. :-)
joesmith- no prob. I hope you find our site to be informative as well as entertaining. There is a wealth of knowledge here. There are just some people still under the negative influence of...well, never mind.
As far as a brake upgrade w/300hp, on my car (s13) I would likely go with the PDM Racing (
http://www.pdmracing.com) 300ZX front brake conversion with a 1 1/16th master cylinder. Stainless lines all the way around and matching cross-drilled and vented rear rotors with matching pads. That should give you all the stopping power you would need for a street application with 300hp. In my humble opinion of course! :-)