A complete original Mr Norms blower set up with brackets and pulleys sold on ebay for $1500 recently.
http://cgi.ebay.com/ebaymotors/ws/eBayIS...e=STRK:MEWAX:IT

I'd love to hear about someone running one too. The original 72 GSS Demons are extremely rare and valuable that you won't find too many people wanting to beat on one. Rhinodart may have some info about how they run.

72 Demon 340
71 Duster 340 Resto https://board.moparts.org/ubbthreads/show...part=1&vc=1