It might depend on the fuel tank configuration, some trucks used the tank location as a step, some fuel tanks were aft of the cab, a lot of different possibilities. It could have had a tank on each side of different capacities and therefor a different step, just thinking of some explanation here.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy