I have a modified l-shape bar I fought with to keep cold. I installed the 2.7 cu. ft. and a 2.0 cu. ft. to help it. But I just was not happy with the temp. I found on ebay a guy selling cooling systems for soda machines. I think it cost between $200 and $300 with shipping and thermostat. I believe the guy is still selling them. It took me a few months to find someone that was in this price range and could provide the complete solution.
For what it is worth.
Tom Long