Relisted due to time waster. Pro-Comp Chevy LS1 LS2 LS6 CNC Ported Cathedral Port Alloy cylinder Heads. Pro comp CNC ported heads , in tests done by Hot rod magazine on one of there test engines, the Procomp CNC heads where one of the best performing , creating more HP then many other big name brands and matching ones of more then twice the price! Its a fair price considering you could as easily spend a thousand on just getting Some headers for a Holden in the UK, considering the amount of work gone into these heads and the performance advantage. Big Valve, Big CNC ports (very nice, and expensive)…

Pro-Comp Chevy LS1 LS2 LS6 CNC Ported Cathedral Port Alloy cylinder Heads. Pro comp CNC ported heads , in tests done by Hot rod magazine on one of there test engines, the Procomp CNC heads where one of the best performing , creating more HP then many other big name brands and matching ones of more then twice the price! Its a fair price considering you could as easily spend a thousand on just getting Some headers for a Holden in the UK, considering the amount of work gone into these heads and the performance advantage. Big Valve, Big CNC ports (very nice, and expensive) aluminium heads. Mine Come with…