I flowed a set of CNC 220 AFR chevy heads for a good Friend and I'm glad he was standing there when I did it. I ended up re-porting those and 2 intakes for him. Nice little small block street strip S10 extended cab that he would drive to the track. It ran 10.50's all day long and surprised a lot of people on the street. He called the guy out on the flow numbers and he started himin and a hollin. A aaaa aaaaaaaa.