Which is passingly strange. The '48 model had the gas filler on the right side of the bed, behind the cab. (I should know. I own a '48.) Routing it through the back of the cab would be an interesting approach. Where would the gas tank be located? Behind the seat? If it is, then it's not a '48. Or it's been modified in a way that would be strange - why would you deliberately put the tank in the cab? (Yes, I know Chevy did it for years.)
