Can someone ID this.. restoring 71 Demon..

Ya I bag everything in a restoration, printed labels with corresponding pg numbers to the assembly manual(s). If I restore something its frame off all bolts wheeled/treated replaced if needed. I have a spot where I put things if I get interrupted or have to leave in a hurry generally to come back and label. This has been sitting there for sometime.. as I said it might be from a previous restoration, I just cannot place it. Figured someone might recognize it if it is actually from an A body Mopar. This pic is always my starting point.

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Very nice mine is similar except still have the wheels on mine, nearly ready for colour then the fun begins