I will get another pic from him with more detail and better source of light.
So I was over at his house yesterday, and found the stamp by the oil filter. After about an hour of wiping it down with lacquer thinner. The stamp appeared.
L91**4884
I am guessing it was suppose to be 19L504884, but the 1 and the L got switched in the gang stamp. the 5 and 0 you could not make out, but for the time frame of (0925) I thought a 5 and 0 made the most sense. The 9 1 and 4884 were the most visible.
I tried taking pictures but my camera phone could not capture it.