I seem to remember a site that listed the staged upgrades that could be done to a GTP, going from stage 1 to 7 I believe. I cannot seem to find this site anymore, anyone know which one that was?

Sounds like ZZP, but I didn't think there was anything after 3 or 4?

Its actually something other than zzp. The upgrades were not for sale, they were just a listing to help.

I remember more clearly now, it told you what to do to get a GTP in every second range. Like for a 13 second gtp do pulley, 2 heat range colder spark plugs, cai, exahust.

And it did this for like 14s through 11s I believe.

That would be Intense racing website, underneath performance packages/reciepes.

Roadrash is correct.