What kind of freon and how to charge air conditioning system in a 1994 Viper.

IT COULD BE SMALL FITTINGS WHICH IS R12 IF SO HAVE IT COVERTERED TO R134 FREON ITS CHEAPER AND ESAIER TO FIND. SEEK HELP ON THIS OPERATION

If the body has all the original labels (emissions etc.) under the hood , there should be one for A/C specs. including type of refrigerant and charge amount. Should have a shop do it , if it's been empty for a while , you need to pull a vacuum on it before charging and make sure it holds vacuum first to eliminate any large leaks.