A copy of the invoice paid even further dividends recently (September 2002). I had a copy of the invoice on display in the trunk at a car show. A man approached me at the show and asked if he could show me something in the trunk. I assumed he had some advice of improving a detail or something so I followed him to the back of the car. He pointed at the invoice copy and to the name "TOM" in the salesman slot and said, "That's me!" Needless to say, we had a long and informative discussion!
Update, January 2008: I was able to obtain the ORIGINAL dealer invoice for the car! I've had copies of it for years, but now I have the original! Even more incredibly, the previous owner recently contacted me to let me know he ran across the original Protect-O-Plate for the car!
Note the typed in reference on the right side center that the posi will be installed at the dealer. A strike was occuring at the axle assembly plants in late 1964 and posi units were nowhere to be found so the car was built with an open axle. The code on the axle and the code on the POP bear this out yet the car has had a posi unit since the day the original owner picked up the car.
(This warning label is a gag a friend of mine who owned an L79-powered 65 El Camino tooled up when he worked in a print shop. It's totally fictitious but we sure thought it was cool! You should have heard the comments this label caused at auto shows!)