Alright I had no heat in the truck, gauge is broke. I pulled the thermostat housing to discover no thermostat, picked one up from the parts house. Installed topped off with coolant and discovered while I was running the truck no flow in the radiator, just wondering if I need to let it run longer to see if flow starts when thermostat opens or if the water pump is bad as I suspect. If thats the case where would be the best place to get one, no parts house like autobone, advanced, and napa have it in stock, its a special order part.... Should I grab on from a boneyard til I get a new one, or what? Thanks in advance.