I've just looked at my single year 1965 Ford Parts and Accessories Catalog publication date January 1965 page 612 section 611A06. It shows Retractor Kit- Front Seat Belt part# C4AZ-62611A06-A Rotunda Sales No. R51-AJ consists of 2-Retractors,2 Stops,1 Instruction Sheet No. 1206. for Ford vehicles A=Galaxie ,B=Fairlane Series, X=Falcon, and F=Mustang Series. This information isn't being provided from a aftermarket book. This is Ford's information from 1965.