Just got my new engine assembled last night. I already had. a Hot Cams 1, Yosh full exhaust, 660 11/1 piston, and a pro flow intake. I had the head ported and he flowed it, 2 mm intakes , 1 mm exhaust and new valve springs and retainers. I'm anxious to see how things work. The guy that did the head has been in the business for over 30 yrs. He has done work for me foir years and have had excellent results. The port work looks great! I know just because it looks good doesn't make it run good. But I know with his experience it will run good.