Fredi, I am pretty sure I have this exact same fridge. I've been using it as a fridge for the past 4 years when I bought it off some guy for $100. It fits 4 homebrew kegs nicely. I took it apart then and replaced the insulation with R-13 fiberglass, but in doing so, I apparently wasn't careful enough with the evaporator and it spring a freon leak. I was able to repair it and a friend of mine tested it and refilled with R12 freon. It held for a while, but last summer I noticed that it has been showing symptoms of leaking again, much slower this time, though. My friend moved away, so I no longer have access to free R12, so it's days as a fridge are numbered. My coworker is getting a new fridge and offered me her old one to replace this in my garage to keep cold beverage, so that means this one is destined to be a smoker. I would be interested to see where your progress is at with this and the approach you took.
Gorgeous paint job, by the way. I can make out the Mazda3 on the other side of your driveway.