I have a 1964 4 door wagon I am restoring and there is one part I have not been able to find. Any help in finding it or at least figuring out the part number so I can search for it would be greatly appreciated. It is the rubber boot that goes from the rear body to the bottom of the tailgate with the wires for the power rear window in it. One company reproduces a similar part for power windows on a early chevelle, but the size of the ends are different so it will not work. Thanks for any help.