I wouldn't touch that thing. Plus, once you drive it on the track you will still realize its a street car. It will drive decent on the track but would be miserable on the street. Plus you already know the problems it has.
If youre going to spend that much, why not just by the real deal?
http://cgi.ebay.com/ebaymotors/Porsc...#ht_779wt_1165
That 92 porsche would rape that 997 gt3.