Wollfen
Old Man with a Hat
Here are pics of the factory four speed mount for the zbar pivot mount on a 1966 to 70 Cbody sub frame. The first pic shows the measurement from the hole on the side of the chassis to the front edge of the mount, this measures exactly 4.25in, the pic itself is a little deceptive because of the angle of the camera, I checked this measurement 3 times. The second pic shows the bottom edge of the mount hole to be 1.75in from the chassis. Then in the third pic you will see the mount face of the bracket is flush with the side of the chassis. The full width of the bracket is 2 1/8in in the fourth pic. If anyone needs more info let me know, the other pics should give you what you need.