After 19 years, I have lost one or two of the interior screws ever year or two, and now it's adding up. In fact, I just lost THREE of the 15mm nylock retaining nuts for my vacuum booster, while in the process of converting over to a T56 transmission. If anyone has a mid-eighties F-body that is junked out, and you are near the mid-Michigan area, please email me. I want to come over and fill a coffee can full of interior screws, washers, and nuts.

 

I picked some up at Auto Zone. They have different sizes.