Hey guys, this wasn't used for a thirdgen, but cool none the less. For our project S/H Torino, we had some problems with our store bought valve cover bolts being too short, so... I remade them 4 3/8 long to clear the 3 1/2 inch valve covers. I used 1/2" bar aluminum, turned all 12 down in a lathe to the correct size of the wing nut, polished them, and press the wingnut on the top, I also drilled, and tapped the 1/4 20 hole for the screw portion. Here's a pic.
BTW, the chrome matches the aluminum, the picture doesn't do it justice, I'll take another when they're on the car.