You have to look at cost and effectiveness, How much does the machine shop at bow wow profit on old heads and blocks, As the price falls for new castings old rebuilt ones are just not worth the effort, I good used set of dual ports you could sell for 60 each, now i sell them for 20 if not 10, new ones are 125 each
Try buying valves let alone guides and springs plus assembly and labour for 125.... Its a new world out there. Its really a shame such a time has passed by, If we would have supported local shops more they would still be out there, The internet in small shapes and forms kills buying power, Gross profit and the cost of opening the doors will soon be a thing of the past.....Its a damb shame
I know i wish i spend more with goeff and jim but sometimes you dont think right untill its too late...