When my cowl didn't come with studs, I thought the ones on the oem hood came out a I snapped them. Went to ford and that is what they told me. I took the snapped part to ace hardware and found some studs that fit perfect(in new hood) I don't remember the specs of the stud though. Sorry.
2005 GTO 6.6L,Twin turbo, E85
2010 GT500. Lethal ORX,LM cams, Corsa extreme, eibach, JLT, VMP 2.5, VMP tune