Bought the supercharger itself at a swap meet in Houston Tx in about 1981 for 10 -15 dollars Can't remember now. When I bought it I had no idea what it was except it was a centrifugal unit. After I got my 57 F100 I figured out what it was and started collecting the rest of the pieces. I'm about 90% through with getting all the pieces. They turn up on E-bay occasionally.