I recently ordered a hardware kit from NPD for the mounting of the lower inner door grille for my 1967 deluxe interior. The kit came in with the larger 3/8 nylon nuts rather than the "correct" 1/4 inch nylon nuts. I was asked via automated email to rate the products of my purchase. I wrote that despite the catalog description that said this was the correct kit for a 1967, that it indeed was not a fit. I got an email from Rick himself who got involved and went to AMK to figure it all out. Rick and AMK determined that evidently various nylon nut sizes were used by Ford depending on plant and date of production. Rick got me the correct parts and is working with AMK to determine a more accurate description for his catalog. Thanks for getting involved Rick.