Bastards! They did open up the exit, and not the cylinder wall side I don't think.

So can I run this at the same time as a stock one? Would you put it top or bottom?

I'm thinking I'll put it in the bottom and be aware that I'm going to need different jetting for each cylinder. Then try and pick up another cylinder sometime or get my old one fixed.
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MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-