Obviously, everyone has their own opinions/facts of the conversion to R134a. Just short of 2 years ago, I had my DeLorean converted to 134. It was done at a local shop and they have done a great job. The car gets so cold that I have to run the A/C at a lower (warmer) level to make the environment comfortable. I have not had any problems - yet. When the conversion was done, I had a leak and the shop repaired that. Now everything is good and cold (knock on wood). I am sure that in many other applications (ie. station wagon, vans, sport utility, etc.) where there is a large volume of space to cool, that there would be an incredible performance drop, but I guess due to the small DeLorean environment to be cooled, this becomes less of an issue. Sean Howley VIN#2345