But PSTONE, do they have them in 6volt versions????

Right Tim, those were offered from ’38-’48 according to the accessory brochure that Gene Schneider offered up. They were Casco fans, you can see the stamp on the rubber blade hub. I haven’t seen any GM accessory fans after that. I was thinking that the recirculating and fresh air heaters took their place from then on as far as GM was concerned. It was then left up to Western Auto and Warshawski’s and the like to supply the fans aftermarket.
Here’s that brochure scan:
http://www.pbase.com/dennygraham/image/115751206

DG


Denny G
Sandwich, IL