I bought this stub from eBay a long time ago as the original Yamaha part was silly money - over £40 at the time I think - but didn't realise until much later that it was manufactured in reverse. It fits fine and will do the job except that the carb locator spigot jobby is 180 degrees out! Easy enough to overcome I guess.
Anyone on a budget need one? £8 including p&p within the UK