Two questions - water pump and barnacle impact

[AwwShucks]

Thanks again for posting! What make / model is the water pump? It has a different setup for hoses than mine.

 

[rukidn]

Pentair SHURflo 8000-543-236 Automatic-Demand Diaphragm Pump, 1.8 GPM With Viton Valves, Santoprene Diaphragm, 50 PSI Demand Switch, 12V, 3/8" NPT Fem

I replaced my old pump with hope to quiet it. This new one just as loud, so I made the other mods. Old pump had similar fittings. My guess is Catalina used a variety over 310 production period.