Although the Protect-O-Plate is still MIA, I found the info printed on the next page, up under the VIN Punchout. No impressions, but this looks like the same stuff.
E G2 124378N428847 D
T8C22 3 5
The ? character is very faint, and has 4 holes from the VIN punched right on it. Maybe a "P"?
And the "D" on the first line may be a "P" also?
Also the Warranty manual has some handwritten info on the front cover "Camero-Gold Stock #674-A 1272 Ralley Sport" Yes, Camero is mispelled....
And the Owners manual has this handwritten on the back cover. Possibly the dealership? "Walker Inman 2437 Gold - 428847"
Here is a scan of the POP info and VIN area.
And a picture of the Water Pump pulley. Yes, it has the ripples....
Unfortunately, I know for sure that I need to sell this. I'd rather someone on here get it, instead of just throwing it on Ebay. Shoot me a PM or a email if you are seriously interested.