I bought a used craftsman pro 80 gallon specs were:
175psi max 5.5HP 80 Gallon twin cylinder (two stage)
Air Delivery: 17.4 scfm @ 100psi 16.9 @ 175psi
Rigged an after cooler on it with a moisture separator after the cooler and before the tank, another moisture collector at the output also bought the HF air dryer but haven’t hooked it up between that and the plasma.