Hi Robbie, I think I can help with a few things, the chrome mudguards and top damper shrouds I believe are a personal thing. the seat base appears to be original but I need to see the front to be sure. Do you have old bike mart if so Leightons on the front cover will supply you with a new cover, sponge and clips. Exhausts and silencers are available from armours of Bournemouth although there is another supplier that some members prefer to use. The basic known colour is stone and green, Is there a paint supplier in your area "Brown brothers distribution ", they did a colour match touch up aerosol for me in cellulose Code 10-0560 yellow selemix 7-310 . so from that you should get the shade for the " stone " . Or if you prefer:- Berger = ref 1977 / PJA= 6170 x 4060 /glasso =24407 / ICI=3827,---Green ;- berger = ref 1341 /PJA = 6170 x 2050 / glasso = 21677 / ICI = 8120 . these from our president, although the paint supplier didn't recognize them. Before ordering any exhaust bits , the heads appear to be modified so that's worth checking out first . Regards Eric.