AC question

[TN70C10]

134a has a different type of fitting. Much larger quick release fittings. It really doesnt matter though. Just vent whats in the system out. Have someone vacuum the system, and get the 39.90 conversion kit at AZ that comes with 3 cans of freon w/oil, charge hose and fittings. You may need one xtra can. With the 134 you charge 80% of what you would have with R12. I did this on my 90 Mustang, 89 Firebird, and my dads 67 Buick 225, none of them have had any problems and they all cool very good. The step not to skip is to vacuum the system, it will let you know if you have a major leak (wont hold vacuum) and gets all the moisture out of the system.