The secret appears to be to find a good older compressor "shaped like a cough drop " or the newer ones might burn out as stated in the second article.
I'm kicking myself for throwing out a big old freezer that was sitting in our basement for years .
It would of had the perfect compressor and a big one as well.....hmmm
First I've got to round up a stainless steel welder etc for the rudder post and tabs....
so this is a project for the future .no hurry here...