REfreshing this.

About twenty years ago, there was a fad for buying tenor (4-string) banjos, discarding the necks and putting on (usually home-built) five string necks.

Now, with the Celtic uprising, there seems to be an active trend of reversing the operation. Does anyone know of any discarded 5-string necks that may be available? Preferably old ones. Ideally, Dobsons. I'd like to lay my hands on one or two.

The other alternative I know of is to buy an unfinished or semi-finished or finished neck from Stewart-MacDonald. This takes either more time or more money than I can conveniently spend at the moment.