On twins almost everyone blocks off the intake ports and installs a single reed block? It would seem to me that simply putting plates over the intake ports would not be a great idea flow wise. It also seems to me that dual carbs is not a big deal to set up. Maybe 2-strokes are different but my old VW was very easy to set up with dual Webbers. Making linkage on a one-of basis might be challenging but for a semi production engine it would not be a problem. Hmmmm?