Ok guys and girls. I have found the right part numbers for the plenum covers that we have been installing on out mustangs. I got a hold of Ken...lolololol

Part # for the Top Stud W712289-S437

Part # for the nut to the stud W520411-S437

You will need to order 2 studs and 2 nuts when ordering these. You can either do this through fordparts.com or through your local dealer.

Hope this helps out anyone who might have run into the same problem as I did.