Help with sea water pump hoses
 

I need help with a couple of Merc part numbers for cooling hoses for an early 502. The sea water pump has both inlet and outlet at 90 degrees rather than straight back which appears different than stock. My oil and p/s coolers are stock HP 465 stuff. I need the part numbers for both the sea pump to drive unit and sea pump to oil cooler hoses. Even the year/model that used this type of sea water pump would be helpful.
Thanks,
Phil