Water pump new or rebuilt

[Davygoat2]

1948 Mack model 75, thermdyne gas engine, twin ignition

had the water pump rebuilt, but it had a immediate failure after a road test,

pump casting numbers are 360GB46B.

pumpshaft is wiped, mechanical seal cracked pump body seal surfaces pitted.

this is a fire departments parade piece, I’d like to see it at the fall muster

thanks