Bill this is my first attempt at porting and polishing a head. These ports I've opened up are no bigger then the openings on a standard header flange ill post some pics of the head with a par of header flanges that I got to upgrade the turbo set up in the future but I hope to get some numbers via a die know test with the stock manifold then possible build a header and and take another trip to the die know.
Keep the insight and questions coming
Aaron
