I just heard from Vic Bellanger that the MSN site is being shut down. Not sure if it's happened yet but all those BackYard guys are moving over to http://www.gl1200goldwings.com If you contact Vic over there he's the admin and he may be able to point you to someone who has done the conversion.:waving::waving: Welcome to the World's Greatest Goldwins Site grizzly102! :waving::waving:
It can be done, a couple forum members here have single carb modifications. There was a kit to do that modification a few years back, they come up on eBay once in awhile. There are also some guys on the Back Yard Built Goldwing's Bar and Grille site who have done it. From what I've heard it works pretty well though there's usually a bit of a power loss and a reduction in gas mileage. Hang in there maybe one of the guys who've done it will chime in. While you're waiting take a look here:
There is some information there and some pictures of the manifolds some of the guys have fabricated along with the types of carburetors they used.