RCA,
Would need to see a better picture to be 100% certain but from this angle I think the bike is wearing a biposto subframe (pillion footrest mount and same colour as frame, should be alloy and look like it) plus the discs are not mounted on the right carriers, (should be spoked). The rest of the items could just be a matter of taste; mirrors wheels, std cans etc.
But if it’s an R you want then it has to be 100% pukka.
Hope this has helped, as already said if you're feeling doubtful then walk, plenty of nice genuine 'R's out there
