I know what you mean from the first post, I have also got a file and filed my hole where my carby sits, just match it up with the adapter plate, wont too any harm, just becareful when you file I suppose. I have never seen that manifold before, looks totally different to my KE55 manifold I have right here next too me.
I maybe guessing but that is probably a ke30 below manifold? Off maybe 3K's or below?