IMO, all things dependent, YOU may **** us not on what you seen and were told, but I have serious doubts on it. Not to call you or him lier, but whats the chances you have seen these heads.
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I did see these heads, and it was in the late 70's/early 80's timeframe. He told me that they were some type of experimental heads. They were on his running 340, and the plugs were in the valve covers. I have no reason to make this up. I just wanted to know if anyone ever heard of this before because I could kick myself for not buying them.