Start of a Dart

I was able to get the car up on the lift, and verify it is indeed a 340 with a 727. Woohoo! I wasn't certain that would be the case but the casting number is correct. There's a bonus for sure.

Does anyone recognize the headers for this thing? I'm just curious who made them, as I can't find any kind of maker's mark on them anywhere. They do fit well with the PS and PB though.

Passenger side:

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Driver side:

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