The R4 compressor is great for your application. It is one of the biggest compressors ever built for cars. I would T the high pressure liquid line and run one orifice tube per evap.

I'm looking to retrofit my 1980 Oldsmobile Omega with A/C. I bought a complete system from an 80's square body. The compressor, condenser and hoses will fit fine. The big problem is the evap core. The only way I can integrate it into the original system is by putting it in front of the intake to the...