Andy shared this rare item.

https://www.facebook.com/marketplace/item/1151516099178460

“Kaiser Manhattan VS57B supercharger, with bracket/idler. This is the forerunner to the Paxton SN (Short Nose) blower. My dad pulled this off a car (no idea what) in a junkyard probably 50 years ago. The VS is Variable Speed, with a solenoid under the cover that adjusts the inner sheave of the drive pulley to change its diameter and drive speed. The “B” indicates it’s from a Kaiser Manhattan, regulated to 4 psi of boost, and has a 6-volt solenoid. Condition is unknown, but it rotates freely, as does the idler pulley, and should be considered a rebuildable core. I’ve got a 50-year old belt you can have to figure out the size. Will ship on your dime.”