Ya I make them myself, I can make you one if you want, PM me if your interested.
That fan thats sitting on the CGK is just for looks its not mounted, in my own system i use a PCP&C Silencer 80mm 28cfm @ 20dB.
Whats odd about the silverado makes it stand out, not that the base is made of silver big whoopee, copper is about the same. It that is uses blower fan, that covers a small area but at a very strong air pressure, im gonna try experamenting with 2 Nidec Gamma at 7v mounted on my CGK, if it follows what seen by others with the silverado, it should be pretty impressive due the CGK is much bigger right off, and manufactored better.