I did this in March, and so far, holding well. Got the kit from O'Rielly Auto Parts - and put it in. Wasn't really expecting much, as my compressor wasn't turning at all. But $50 and crossed fingers it worked!
Kit had thee cans of 134 + oil in it. First can dumped all the way in and the compressor started to turn, system took all three cans and was right at the right pressure for the temperature outside. (The gauge has a range that you set according to the air temp)
Blows real cold, I am way happy.
86 2m6 http://images.fieroforum.com/2012/photo_(6)_4.JPG