I had a 6-pak 69 road runner hood from MAS. It looked ok on top. The bottom wasn't made like the factory with the box to seal the carbs to. On the street you couldn't tell the difference. At 80MPH on the track...the front corners of the hood curled up 90 degrees. That's a little scarey. At 120MPH I could see the carbs from the bow in the back of the hood. If you're racing don't go MAS.