1967 Barracuda Trunk Trim Mldg Clips

Factory used a slightly different stud on the ends and a closed nut. I suppose this could have been for safety since exposed bolt ends aren't friendly The longer studs on the lower trim would dig into the body too.
The same type T bolts you have can be used on the ends but they will need to be shortened. Those you have are what 3/4 inch ? I think a 1/2 inch length worked with the nuts I used. I had black plastic closed nuts here but have no idea where to buy more. Hope this helps