First you have to mention what the size your carburetor's air horn is and that will determine if it is an aftermarket or not. Stock AFBs on 60s cars have a four and a half inch air horn, an uncommon size nowadays. Holley, Carter AVS and aftermarket AFB carburetors have a five and a quarter inch air horn. If you have an aftermarket AFB just about any Mopar air cleaner from 69 to the late 70s will fit. If you have an original AFB then you will need a vintage air cleaner from an early to mid 60s Mopar, or you can get a small plastic adapter and use an air cleaner with a five and a quarter base. Roy 67 Crown FDHT In a message dated 1/5/2003 3:53:03 PM Pacific Standard Time, johancwildhagen@xxxxxxxxxxx writes: << Id like to get a replacement for the pie plate base. What is the size neck (the hole that rests on the carb-AFB). I cant find any in the regular parts shops. It seems to be an odd size. Is this a replaced carb? If not, why is it such an odd size? >>