A lot of variables on an undefined question.
The answers can't be much better until we hear more -
Tell us how you plan to use the car.
For example, perhaps for your use, a different IC is a waste of money.
3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno