Hi to Marvic and grumpy, I did some research and posted the pics on the ASECC website....This is the reply I received from Gary Stewart from Ohio:
"My guess is a 80300 series. The 8B etc had "B/S" stamped in raised letters on the shroud. The side cover is "different" with the casting below the bolt hole, and I don't remember seeing a gas tank bracket that was reinforced as this. This may be an exported engine and we just didn't see these here in the States. Hope this helps".
Hoping this does help,
