Check your favorite performance shop such as Barnett, JEG'S, Summit. I have a set of locking header bolts. The locks are teardrop shaped aluminum tabs about 1 1/2" long that have a hex hole that goes over the bolt head and the point rests against the header so the bolt can not turn. The bolt heads have snap ring grooves in them. The locks are held on the bolt heads with snap rings.
My gaskets are thick and black. I think they also have copper seals around each port. IIRC they were labeled as Boss 302 gaskets. I do not remember the brand. Local go fast Ford guy picked them up for me.
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