w2 heads

"strip happy" . I like that. W2's are hard to beat for the money if you can find them. The new large port commando's are good too. Good deep bowl job, radius (round) the top edge of the guide boss, port match and 5 angles on the seats and you will be very close to 300. Also do a 30* back cut on the valves and you will have good solid heads to build on. Good luck. Terry.