Here's a pic of my 1982 Majesty as i bought it.........it's in pretty original trim apart from new Gold rims and a SM Chrome front pipe and a WES Tailpipe.
It has the later Godden Chrome frame and main differences are geometry and ground clearance when i put it next to my TY175.
It came with Gas Girlings (now replaced with Falcon Gas Shocks and correct springs).
The engine I believe is a 175 from what I was told and not a 200,but I've not had the head off.It is a Majesty engine as the engine cases are correct,they were modified when autolube removed and a different oil pump cover is fitted,plus generator cover is cut and modified.
You can do the 200cc conversion with a Yamaha Jet Ski/Watercraft piston,
I believe.......somebody will know.
Craig Mawlam has a lot of parts and knows the history.