The RZ500 and 350 at the Toy-Run 2 years ago belongs to Casey, who organises the HMG (Historic Motor Group) here in the Western Cape.
Dan, Keith Bright at Bright Glass has got the mould for the bikini fairing, and can make one for you. I'm sure Casey can stear you in the right diirection for the tailpiece, as he had to rebuild his after dumping it at Killarney in a big way about 3 years ago.