I'd love to see your stage 3 against my M3 lol.
I have a midly tuned E36 M3 GT which regularly beats 400bhp cossies lol.
I have friends with genuine 400bhp cars that just can't shift me lol.

And in the 11 years I've owned it its broken down once and that was my own fault lol. Other than maintainance they're brilliant cars. Mine gets abused every time it goes out. That isn't the same with my mates cossies lol.