If you've got 600 get e85 right away. 200 60 lb injectors or 42.5's so you don't have to tune it. 200 for injectors, 200 for headers. 100 for plugs/tstat random stuff and you got an extra hundred.
thats worth about 60hp right (with a 3.2)? These cars will run straight e85 without tuning the fuel tables? I thought the tables had to be changed.