Here ya go Bill, this is where it came from. Blessings, Geno.
KJ Humphries has a fan 3D printed.
Take a look here.
http://kdhumphr.wixsite.com/double-take-replicas/product-page/cabin-fans
Thanks Roger, I actually scavenged those from a scrap 1/24 GMP diecast GTO, I keep a bunch of scrap diecast and model parts on hand for such projects lol. ?