What is the difference between a 18hp Nissan 2 stroke short shaft 18e and 18e2? Are there lots of parts available for both models? I'm looking at a 1992 or 1993(can't remember) Nissan 18hp 2s ss ( blue with silver cover)tomorrow and I don't want to buy it if parts are not available and/or they have lots of problems etc. Where can I find the serial or model numbers and the 18e or 18e2 decal. I will be using the outboard on a light weight 14' aluminum for lake fishing and also dropping off crab nets in the ocean. Is a 18hp Nissan okay in salt water. Any help would be great. Thanks