there are no markings on the flywheel, however, it would seem that a single plate clutch system that was designed for specific oem use in 3 model variations, would be supplied to MG by one source. Especially given the uniqueness and compatibility of said kit. Now, ... RAM could very well have outsourced the flywheel and probably did.. to a casting vendor, but I doubt MG made it. Without some "inside" info or markings, I doubt we'll ever know. Safe to say - don't ever install one.
Guzzi (circa 2000) "it'd be cool to put a lightened flywheel in some of the new models... hey RAM, what'dya think?"
RAM ... "no problem"