Hi Bill. Now this is getting interesting! I'm quite sure this engine is a
cross flow and it does have the bell-like cover on the back. Also, I've seen
the power pack number associated with some 1986 engines.

However, besides the huge, extended mounting brackets (which my outboard does
not have) how can you tell if it's a seadrive? Under the cowling, it looks
like a plain old OMC.

Thanks for your help, and please let me know if you think this may be the
seadrive.

Thanks,
Dennis