well bitterend choppers makes hardtail frames from scratch,
http://www.bitterendchoppers.com/FrameSalesPg2.htmlbut not a kit weld-on. Ive seen 1 weld-on job on here and it was a one-off bike in a show.
Your link didnt work, but usually the way it works with rims is you use the stock hubs and get someone to relace a new rim with it.
