Hi Nutz,
I've been watching this one for some time on ebay, hoping he'll come to his senses & drop the price by about 90%! No luck so far. There were a couple of different diameters, as I found out after measuring the one I discovered after a long search, only to find the very early one I got was appr 48mm tank hole ID, and the one I really wanted was closer to 38mm. If it's the smaller one, and not spoken for, we can work something out.
All I need then is a seat(still looking!!)
Cheers, Mike