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I bought an E46 M3 last January as dedicated track car. BigJae and I counted a dozen former/current E9X M3 fellow trackers that have went to the E46M3 platform for the track, in last 2 years in our little circle.
Do you know what class you plan to race in? Figure this out early on otherwise, you may have to reverse mods. Your build sheet looks like NASA GTS3.
You may want to give James Clay (Bimmerworld) a holler. He sent me a couple of build sheets to help go by.
You'll probably end up spending more time on E46 Fanatics or M3Forum.net.
Disapr has an epic build journal that you may want to look at.
2001/2002 are prone to rod bearing failures so you'll want to get that sorted out earlier.
My car is getting subframe reinforcement done right now along with solid mount/bushing replacement. I am also installing the BW oil cooler and Zionsville Radiator. Next year if finances allow, I'll install the cage and complete the GTS3 build and apply for my NASA and BMW CCA race licenses. This year will be TT's and Chumpcar.
Best of luck!
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