ok so 4ag needs to flow to ensure good power, as small port is well as i believe to small the big port was to be the base for the project, so i will now introduce you to, the monster bigport. Initial rough porting shows the general idea to get large amount of air into small space with high port velocity well as high as possible. As it is a race only engine i don't care to much for bottom end power as i plan on it spending most of its above 5000, the test port is nearly completed minus some light blending (pic of this not here yet) Initial flow figures looking very promising. The 250hp mark is looking fairly achivable