The cleaning continues. I have been carefully wiping down the underside of the car with some rags and a little diesel fuel. The diesel method seems to work wonders on the original exhaust system. It cleans the surface rust right up and then slowly evaporates leaving a slightly less rusty looking exhaust system. [img]<<GRAEMLIN_URL>>/grin.gif[/img]
I found some interesting items on the rear differential after wiping the grease off. It looks like the differental was half-heartedly blacked out on random surfaces of the tubes and the center section before installation at the assembly line.
Here is the factory GYC stamp code (3.08 posi) on the partially black painted axle tube. There is also a "191" stamp which could be the date of assembly (191st day = July 10, 1973) which matches with the late July build date of the car.
and here is something I haven't seen before: a yellow ink stamp of the same "191" on the upper webbing of the center section.
An orange "G" on the top and bottom of the center section:
Some green paint marks on the upper portion of the axle tube, partially covered by the black paint:
