I have recently purchased a 1967 55HP chrysler outboard model #5573 and am in the process of restoring it. So far I have cleaned and regapped the points, tore apart and cleaned the carb, replaced the spark plugs, ignition key etc. I got her to start and it runs and sounds very good. Was idling a little high but I got that adjusted. I have no water flow to the powerhead. I tore the lower unit off and this is what I have. I have a waterpump that I have been unable to locate anywhere. It is a three bolt water pump, everything I have been able to find is a 4 bolt or 6 bolt. The impellar had 2 out of the 10 splines broke and they were stuck in the water tube. I cleared them out, blew compressed air through the inlet tube, through the thermostat, and through the exhaust and everything where i blew air to had no restriction so I know the lines aren't plugged. I ordered a new impellar and installed it. Put everything back together, ensured the impellar was locked on the driveshaft keyway, and reinstalled the lower unit. Still no water flow. Any clues?? I'm at a loss. Keep this in mind I removed the thermostat just to make sure it wasn't stuck causing the issue. Also keep this in mind, when I pulled the lower unit off the water inlet tube came out with it. It is a copper tube. I found where it goes back into to enter the powerhead and reinstalled it. It did not feel real tight but did stay in place. Is there a seal that is suppose to go there, if not is siliconing it a bad idea? Where can I find seals for the drive shaft that sits below the water pump plate going into the gear case housing, and the drive shaft seal for the water pump. When I tore the water pump off, it did not have a seal on the drive shaft above the water pump, just below it where it goes into the gear case. Any help would be greatly appreciated.