40 Ford Column Drop 1-1/2" Diameter. A cleaned up version based on the original dimensions of the 1940 Ford column drop. Now you can bolt a stock or aftermarket 1-1/2" diameter column straight to a '40 dash, or drill your own holes and use it in any application that needs a 2 inch drop. Use with or without column shifter. 3" center to center mounting holes. Double split for easy column mounting.