Where to find an evaporator

You might look at Hot Rod Air & Vintage Air products for their universal fit evap units. They offer vac & electronic type controls.

www.hotrodair.com

www.vintageair.com

I have heard very good things about Classic Auto Air's tech support. They offer a "Perfect Fit" series for many cars that is supposed to use OEM old heater controls to operate their A/C evap. They used to rebuild evaps boxes for people.