Thanks for the info so far. I've been researching it some more myself and really like some of the M3's. I'm still not to sure which is better between the 325 and 328. The 328 seems like it would be faster because of the larger displacement size but from what was posted here the 325 os more easily modded for more hp.
Kirby:
I started auto-xing last year and really like it so far. I'm currently driving a 97 Mitsubishi Eclipse GS-T in E-Street Prepared. That is one tough class in my area! =) If you havent auto-xed yourself I would highly recommend trying it out.