Thanks for all the ideas--its all a bit overwhelming right now, but I'll work thru it.
By the way, the seller stated the engine has a "version 17" set of heads, and that the radiator hose to the engine was "soft and pliable", and this supposedly means the head has no cracks or gasket leaks, and is in top shape. What's he talking about? What preventative maintenance should I do to make sure I don't have cylinder head problems down the road?

Robby

1986 300SDL