Another east coast vs. west coast Triton difference?

[Triton106]

For those who are interested in the topic I noticed in my recently haul out that all of Triton106's underwater through-hulls are flush mounted (the above water through-hulls - bilge water pumpout and engine cooling water pumpout are mushroom type). There are a total of five of them - two in the head, one for engine cooling water intake, two for cockpit drains.) Moreover, the through-hull holes are molded in (see diagram below). I am not sure if that is unique to certain vintage west coast Tritons or they are for all west coast Tritons.

[kabauze]

Mine (#450 from 1963) is the same way.