Well your one up from me - I have the 4-AF (Carby) and i'm looking to do an upgrade (4-AGE 16V RedTop) but for now i'm going to put in some king springs, KYB shocks, a stock replacement K&N circular panel filter, new straight through 2" exhaust, extractors and although that won't improve the power substantially it will improve response and handling!
You could go the similar option, but being efi go the High Flow POD filter option.
Looking forward to it all! :laff: