I just went to the local salvage yard and they guy started telling me about this 318 engine he had. He told me it was extremly quick and a lot quicker than any other 318 he had ever dealt with. He said the motor had a W In the vin. What does the W stand for? I am building a duster and i have been looking for a 340 but im kind of interested in this motor. There was a guy there with a 340 duster and he said that he has not road in a 318 with that much power either.