gt40p accessory bolt

got to the hardware store and find a stud that has the same thread pattern the small side of your accessorie bolt. I just did this same thing. When you take it out of the stock head, I think the thermactor plug is sleeved and that sleeve comes out with it. If you look at the plug in your GT40 heads it already has that in there, or doesnt need one. Either way, go to the hardware store and with your old accessory bolt and find the one with the same thread pattern as the opposite end. Will screw right in I promise.