Need help to identify these manifolds.

jazak5 said

YES I had seen it on the passenger side manifold. the round weight and if you have the valve and thermal spring on the weight and it moves !!

I would not question their authenticity that set up alone is another $200 *if you can find it//I could be wrong BUT I have yet to see that repo'ed only NOS

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Mega Parts is showing a repop heat riser valve repair kit at $145.00. I think I've seen it somewhere else for around the same price. I'm not sure if it is actually the correct one. The NOS ones I've seen are two or three times that much. Brad's is showing NOS for $389.00, and it looks like he's out of stock.
Mine's stuck open, and for that much, it's probably going to stay that way. I bought one of those electric choke conversions. I'm going to put it on in the spring. If it works well, it will make the heat riser unnecessary.
Mega Parts USA - Reproduction, NOS and Used Mopar Muscle Car Parts