Look for one that fits the truck first, let them figure out what that is. The parts guys will interchange it, even in a junk yard.
What is wrong with the fitting? If it is just loose that is normal, it screws in there and can be tightened. If it is destroyed you can still replace it without changing the pump.
Mac :{)
1962 K10 short step side, much modified for rally
1969 T50 fire truck, almost nos, needs a few things
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