I have a ported b16a head. Pretty radically done for a naturally aspirated car. The motor it was on made 220whp. I also have a B18c block that i was gonna build to go turbo for my street car. Physically I know it will work, but has anyone done this? I have never buillt a turbo motor, and dont know what kind of things make and lose power. Am I better off with a stock head? I dont have the flow numbers anymore. But it flowed well at larger valve lift. Thanks in advance.