Well, if you only have a 60% stock XS, just bung on a funny seat, half decent pipe & a 'different' paint scheme and suddenly its worth a mint ,apparently.....
http://www.ebay.co.uk/itm/Yamaha-XS...7984858?pt=UK_Motorcycles&hash=item2a30d66ada
http://www.ebay.co.uk/itm/Yamaha-XS...7984858?pt=UK_Motorcycles&hash=item2a30d66ada