Jerone,
If you go to the Library Section of this forum and open the post titled "Mustang Hardware Spreadsheet 67-68", open spreadsheet titled "MHW67-68PN01", scroll down on the left hand column, "Part Number" to the part number you need, you will find a description of the part including the reference document where it came from. File "MHW67-68AP01" lists the hardware by application. Give it a try.
Jim