I've been wondering the same thing.....I'm just about where I wanna be for my daily driver, but would like to do small things to just bump the HP a little bit more....
Was thinking of the Dual feed line and some 90 or 105 HP Sticks from F1 would put me in the mid 500's with my setup.....??????
Going to Garmon's shop day on Nov.3 to see what my setup is netting me on Dunbar's dyno at this time....