E36 318i 1992 Replacing the ac compressor.
I need to replace the ac compressor on a 1992 318i. I don't think the gas has leaked but the clutch bearing has seized and taken the mounting hub with it. I have found a replacement compressor and filter/drier , original type new, on the web. But what else will I need to replace to use 134a refrigerant. Any advice is appreciated