I was looking at the transmision numbers today on my 1969 Camaro. I need help knowing what car the transmission came from. The partial VIN is 18B135475. It was very hard to read the numbers in the car with a mirror, I hope they are correct. I think this is a 1968 transmission from a 2 door Impala made in Baltimore, MD based on my researched. The numbers on the side tag are 311, CC-68-8423. This appears to be a 396 325 HP car. I assume the 311 is Nov. 1967. It appears the VIN was stamped and the bottom of the numbers did not leave an adequate impression, so they moved up and stamped it again. I only see the last of the digits (135475) as the others were stamped over. Does anybody know Chevy other than Camaro that would know the source of my transmission?