[MENTION=20625]Crumpler[/MENTION] do you like the Whipple better?I Went from 670 to 727 kit with roush tune. Changed was not noticeable. Look at the torque curves they advertise. Not much more power under 5500rpm even though you are increasing boost. Tune is rich and Conservative. In retrospect i'd just buy a boost a pump, pulley and get a tune from somewhere else. (but i dont need to worry about it, I have a whipple now)