Cheers guys, great to get nice feedback from you.
Terry, good call on the 531 sticker.
I'm led to believe the Select 600 was 531 competition tubing, the seat-stays are slightly smaller diameter than the standard tube-set. Technical information seams rather sparse, but the previous owner is very knowlegable on the bike.
Yes, your right though, I may well try and source the correct one.
I'm just trying to get the finishing touch to the bike working, so I'll put up a few more pics in a day or so.
Many thanks again for the comments though folks.