I think I've got a very similar frame (cable stops all look the same) and it's 531 with 501 forks. It's been gathering a bit of surface rust in the garage, but I think at some point I'll have to have it stripped and powder coated.GrahamNR17":2fw9p9hw said:I'm not sure I know what to do with a bike like this I've never had anything at this level. Oh well, looks like I'm gonna have to ride it then :?