This is an offshoot to the thread "We're getting hosed
I'll start it off. My new engine is a Westerbeke Century 120-T4A,
based on an Isuzu block (I don't have the info with me here at work). I've already had the experience of traipsing all over Boothbay Harbor, Maine, one day this summer looking for a simple oil filter. The engine's new enough that no marine or autoparts store in town had any kind of cross reference on parts numbers for it.
Any takers? And while we're at it, how about the Westerbeke 7.6 BTD genset?