Re: 1993 Is it Volvo-Penta, OMC, or both?
The 430 is a Volvo model number for the 4.3.
The drive numbers didn't help any, but that is easy enough to sort out.
If you go to the link below, and type in 430 in the engine type box, you can find out some basic information on the engine and drive. I know roughly which drive it is, and they are great drives. Had one (siimilar design, just older) on my 27' boat. You aren't going to find a better outdrive, and the engine is a standard GM V6 4.3L. Nothing fancy, and very common. Basically, the 430 A and B are the same, so go to the 430A link in the link below to find some brochures.
If you do buy it, let us know. There are service manuals here for that engine and your drive.
PS: Don't worrry about the year. Many 93 boats have 92 engines. the boat and engine year changes are at different times.
http://www.volvopenta.com/volvopent...lication_search/pages/publication_search.aspx