Sal, starting a small diesel that has been laid up for a short period
of time is not like that of a gas engine. Unburned diesel left on the
cylinder walls keeps them from rusting. And because it's going to take
a little bit of time to start it because of having to prime the fuel
system, the bearings should get plenty of oil before it starts up. As
far as cooling, your going to have to get a wet exhaust manifold
fabricated for the engine, unless you want a dry exhaust, which I
wouldn't reccomend you making yourself. Your also better off getting
marine engine mounts and making braclets to fit the engine. As far as
the transmission, I would forget about the 5 speed, boat transmissions
are very differant, the automotive unit will probably not last very
long. This would eliminate the thrust bearing and CV joint as well.
Before I got too far into this you need to see if the engine is worth
using. How old is it? Does it burn oil or leak? For the size engine
your looking at, you could probably buy a used or rebuilt marine engine
and marine transmission for the same or less. Take a look at Ebay.