just save the .dll files into REAPER's VST directory, or change REAPER's VST directory to look where your Fish Fillet .dll's are stored. then they should show up in the FX list when you go to insert FX on a track.
Awesome man! You're lucky yours is a GT...The car isn't 100% mine, my parents got it as a vacation car, and I get to drive it 'cause they want me to have side airbags and stuff. They wouldn't spring for the GT, and my dad wouldn't go for manual either 'cause my mom wanted to be able to drive it, which she never does anyway.
Are there regular Legacy owners on that site also? If so, I'll def join.