Thanks Melwff, do you know if they can be modified to fit or is the GT500 version the only option?They are wrong. I made the same mistake. They fit the GT350. They will physically attach to the car but the bottom edge does not correctly align with the bottom of the rear bumper.
It probably doesn't matter, both are arch screws.Also looks like the spreadsheet show part # for the screws starts with 715 and your screw shows 716