Last year we purchased a '73 sportfisher fixer-upper as a project. we
converted to outboards, and now we're sitting here with all the engine
motors/drives/parts. problem is, I'm not sure what they are...

I think the engines might have been an afterthought-upgrade, but not
certain. regardless, we've got three pallets of spare/replacement
parts. so I'd like to figure out what these are -- and whether they're
worth selling, or simply hauling to the dump. the sterndrives are some
flavor of OMC (I think) electric shift (maybe late 70's model). The
engines themselves are inline 6-cylinders.

1) how do I go about determining the type/flavor of the engines? (from
other threads it sounds like these might be the GM 250 small block)
2) is there someplace on the sterndrive units where a model # is
located? (or some other way to positively identify the model/year)?

thanks for any insight,
mike