Well it seems I am the RM80 frame king! Here's the list, pick the one you want.
1 x RM80C frame with triples
1 x RM80C frame with swingarm
1 x RM80N frame with swingarm
2 x RM80T? bare frame (twin shock with RM80X prefix)
1 x RM80T? frame with swingarm, triples, brake pedal, brake rod & foot pegs (twin shock with RM80X prefix)
While I haven't looked very closely, they all seem to be in good usable condition but require a refurbish.
There is also a good rolling RM100T chassis with tank, seat & pipe.
Cheers,
K