I had just about every bolt on you could think of with the AFX ecu, and I pulled a 15.9, after that, I put crower 2 cams with fidanza cam gears, race valves, head port and polish, intake manifold port and polish, and bigger TB, and a rev of 8100rpm. I bet I would have pulled a decent time natrually aspirated. I have no idea what my time would have been because I never made it to the track, I decided to make som ereal power and go turbo, but 15.9 aint bad before the head p&p and cams etc., I should have gone to the track dammit. That was at stock compression and bottom end too. I'm guessing around a 15.5 quarter mile time. I think it would be an easy thing to get our cars into the 14's, but it just wouldn't be worth it. You can just put a turbo on our car stock and pull a 14. But, it's all about what you wanna do and how you wanna spend your money.