Oh ok, '67 are round too, Good!
I am going to tool up some special tools that will use a set of "1/8" rivet dies" that can be purchased, (I would buy them and include in the kit), BUT ALSO, I am going to have a machinist, (as soon as he has time, he told me this Sat, but i think he's going to delay me another week or two now, He's busy), make some special Dies (that will work with one of the tools), to get in the tight spots, and also special dies to press the studs, into the the brackets.
I would supply all the hardware: special studs, and 6 different size,(length), semi-hollow rivets required to "assemble" the Grill surround, with pictures with instructions.
I'm Up in the air about if I should just "RENT"(?) the tools to those that need them, or sell them. Depends how much the machinist charges me, and if there is any market/need out there for it, I would keep the cost of it as low as possible. Maybe have a high deposit so people don't trash/keep them, but charge $50 to rent? Everything still depends if I get the tools and dies made up, and they work! Ha!
I haven't found any nuts that are close to original, (yet), so hopefully people have their original nuts, or don't mind using nuts from the hardware store.
