Thanks everyone for the help.
Dr. Charles: you are correct. I'm not trying to stamp anything, just gain some confidence my car isn't tampered with or worse. If the stamp on the tranny matches my vin tag, I'll feel better. If not, I won't assume the worst, but I would have less confidence the vin tag wasn't just pulled off another car.
I did spend about an hour with a scotch brite on the drivers trunk channel and came up with a number. It didn't seem to match anything though. Am I correct that the last numbers on the fender tag are the von or so # and should match the one on the trunk and the rad support?
I also got the paint off the decal on the door jam but it appears to just be tire inflation pressure info.