Bayerische E46 has some great advice. His thoughts as well as bigjae1976's are why I decided to go N/A with a 328 which I feel gives me the most opportunity for power as well as bullet proof reliability lap after lap. You want the car that you can turn lap after lap in and keep learning, not the car that you spend the track day trying to get running right.
The car is making over 200whp now which is as much as any stock ZHP and it's getting cams soon. Plus, I don't have to worry about harmonic issues with the 2.8 block. FI is just going to give you headaches on a track car unless you have a huge supply of money.