Ran across the following ad in a local "shopper" publication. Perhaps helpful to someone out there. I'm quoting the ad directly as it appears, making no claim for accuracy, just passing along information.
"Remanufactured High Performance Smog Pump for 1968 Canaro L78, 375 Hp car. Deep grooved original GM pulley. NOS air injector tubes. Includes all mounting brackets and hardware. $1000 OBO. (775) 230-2724
775 area code is northern Nevada.