Please Help Me Identify These

[Plum6Pak]

If you can decipher these please let me know. I've searched all the books I have, on the internet and cannot come up with the answer. They have the probes in the ports for emissions. I thought they came off of my 70 383 but now I'm not so sure.  If they didn't I need to put up a search for the ones that came off of it. Thanks!

[camjam]

I can't find those numbers for an ebody nor can I find those numbers in the parts interchange book. I'll check with a friend when he gets back from Van Nuys.

[Chryco Psycho]

from the sequence # I would say 69-71 , the heat shield is the similar design to what was used in the 69-70 era, they are definatly lo perf manifolds 

[Plum6Pak]

Thanks Chryco, Camjam, they are std manifolds but trying to determine if they are the correct ones off of my 70 383. They are in almost perfect condition but if I want to get rid of them I need to make sure what they are for. They have the emmissions tubes sticking down in the exhaust port holes as well, maybe California emissioned car? This 70 Satellite did come from California.
 

[camjam]

I talked to a friend about the manifolds. He can't find his books right now he's moving. However he says that series of numbers was usually from 73 - 74. In my parts interchange book the numbers listed there for 73 74 start with the 367 series although they don't list your numbers.
Sorry I can't help out more.