I used a mix of aftermarket and original clips in my installation, and had more problems finding a screw that would work. It requires a number 8 thread size with a number 6 head flange screw. The 8 size head will not allow the trim to engage the clip. I also had to shorten aftermarket clips to fit into the A pillar channels correctly. I used AMD purchased trim. Just my 2 cents worth. I did purchase screw kits on ebag that claimed to be correct, but weren't.