I believe the sheet metal parts like the fork covers and mufflers are mostly made by MCM.
I NEED PERIOD AFTERMARKET AIR CLEANERS. PLEASE EMAIL IF YOU HAVE ANY FOR SALE OR TRADE.
I have never seen this early type dual carb manifold before. The pic looks like they could be for the Triumph, but it is unclear. Looks like the splayed type manifolds as I posted previously were not available yet.