I am looking to convert my r12 system to an r134A system and to be honest I have no clue where to start. Should I buy all new or is there a way to take the system I have and somehow make it work with R134? Could someone help me with what parts ill need? Or if I can find something to replace the R12 that will work with my system. I'm having a difficult time finding r12 so thats why I want to swap.