Bill, You are a gold mine of SAITO info. Thanks a lot for all the help to all us. I just bought a new 180 and am in the process of slowly breaking it in. It has the same shape intake manifold as your picture of the 150S, with the square cast corner. Why does SAITO still use that cast manifold when, it seems to me, that the smoother bent one would flow better, like the one on the 72?
Thanks
Ron