ac evaporator

The RV type compressor used on /6's was about 9.5 cu. in. displacement and the RV-2 type used on V8's was about 10.5. I would look up the Sanden type you want to use and match up the displacements. Also, watch the Sanden type you use some are speced for R-12 only and others are R-134A depending on the seal materials used.

On refrigerants, wait until R-1234yf really starts moving in and R-134A starts getting expensive. That will really boost sales of the Hydrocarbon mixes or Propane/Butane.