I called stillen to buy my fuelrail adapter fitting for my nitrous setup they flat out told me they wouldn't sell me anything seperate from thier supercharger package, that if i wanted the fuel rail fitting i'd have to buy a supercharger..
kinda stupid to send business away like that but i guess they must be raking in the money so 50.00 is chump change..
Also the place where you can find it is here:
Pro Tech Performance, 808 Mcphaul, Austin, TX, 78758, 512-834-8771, 512-834-8772
It should be about $50 and it's the same one that works on teh G35 and 350Z.