Toying with the idea of making a crossfire track car to compete with a group of my friends that run M3's.. -- Not a club racer, but just something to take to open track days that will keep pace with an E36 or E46 M3.

Inital plans would include suspension work and an LSD with steeper gears. Anyone made these upgrades yet?

I would look to drop as many Lbs. as possible by taking out anything that wasn't ncessary inside -- anyone tried any lightening yet?

And of course, some kind of forced induction would be necessary...

I'd be interested in anyone else's experieces in this direction !