I got Head.

[Onefast99gsx]

What turbo do you have? You probably aren't out flowing the stock head specs. I'm in the high 11's with a 50 trim and all I did with my head was clean the cast imperfections up. Quite frankly, i'm sure that was a waste of time. I'm sure it would have went the same numbers without doing what I did. Definately don't touch the exhaust side. I wouldn't even mess with the Intake side either. The bowl work is where much of the horsepower is and if you don't know what you're doing, you can make it worse. You may also run the risk of running the carbide bit across one of the valve seats if you try to do bowl work. NOT GOOD.