I don't have the gear set in my hand, because I don't know if they would work in a '55 first series differential housing. That is the number on the box. Parts Manual I have states they were sold as a matched set same number for both ring and pinion. I had heard of a truck fuel saver option ratio offered in '58, but lack any more information or part number for it. Patrick's now offers a 3.38 set for '55 and up trucks, around $400. I have a price for this nos set a lot less. But will they work???? :confused:
