Ok so I managed to get back into the valley to find these parts and take more photos/video.
Here are some shots of the cylinder head with what I hope are part numbers on the exhaust pipe.
Let me know what you think:
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The part number on the above piece reads: 83145-B
The exhaust pipe did have some numbers and letters on it but it just so happened they were on the side which is bent back against the head and so I could barely get my cvamera to see them. If only I have my eyes from five years ago with their 20/10 vision I swear I could've read them no problem.
Here is what I was able to capture there:
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I believe the stamping reads: 96R67012
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Above those numbers appear to be the letters "BUHR" of possibly "BURR" but then become unreadable until the end which appears to read 11 R
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This part of the pipe has what appears to read as: (OK
stamped on it but I don't see anything beyond that.
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Lastly i noticed this symbol on one of the pipe flanges. I'm not sure if it helps.
I also got some more shots of the ammo feed shoot:
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This is the largest piece found:
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The piece above has a hinge inside of it:
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I have a few more pictures but I've run out of space here. I also have a video which is basically the cylinder head from every angle so if there is a specific angle you need let me know and i will freeze frame it for you.
Thanks again for your time everyone!