I know these may not be car related, but I have searched everything and everyplace I could think of, and I am stumped. The heavy cast iron is gorgeous and I wish my exhaust manifolds looked this good. Anyway, I am turning to my Camaro buddies to help me solve this mystery and allow me to sleep better. Some mysteries just have to be solved. BTW, they were asking $5 for the pair. looking back, I should have bought them. Maybe I will go back and get them...why, I have no idea.