[Power Surge]

This is the problem with looking at original cars... most of them have been restored at some point.

I have pics of original cars that are supposed to be good examples of unmolested cars, but even if the car has been repainted, that could have warrented a bolt change. 3047 is a good example of a car that's pretty accurate still, but it WAS repainted and some things were changed from original on it. It does have hex head bolts for the filler though, AND the repaint was done OVER them. That could say that the hex were as that car came.

Dick Smith's car is not a good car to use for reference, as there's not much on it as it came from Shelby due to it's decades of racing use. The pics I have of that car, show allen head bolts.

3003 has hex bolts, but we know it's been molested. Even the clocking of the cap itself looks altered on that car.

3034 is a fairly unmolested car, and it's got hex head.

I would be interested to see what 3050 has, as in the pics recently posted it's hard to tell, but it also looks like hex head bolts (that were painted body color).

None of the other cars that I have pics of really tell anything, as they all have very altered pasts. But for what it's worth, they also all have hex heads. I don't actually have ANY pics of a car with anything other than hex heads.

I am sure Ron has much more insight on this.