I had to upgrade the radiator to electric fans and also install the condenser and I didn't want to reinstall the radiator until the old engine was removed and the new engine installed. I still needed to move the Corvette around and maybe drive a few miles now and again (the semi-public and all) so I did a Bubba and hooked the radiator hoses together with the goose neck from a sink trap....yup. The picture doesn't show the goose neck that well, but it's there.
the AC never has worked in all the time I have owned the Corvette. With only a few months out of the year, here in Montana, that the weather is very hot it never seemed all that important. I plan to put the Corvette up for sale after all of the modifications are complete, so AC seems like a necessary upgrade. Vintage Air doesn't have an AC upgrade for the 1977 Corvette, so I will have to build some of the duct work for connecting to the new evaporator unit.