Ron, ARA was an aftermarket A/C company from back in that era. I don't know if they are even still around. Unlike today, back then a lot of cars were bought with out A/C and later on had it added, so there was a pretty decent market for add on systems. The aftermarket companies had systems designed to fit specific vehicles, and some were even installed by the dealers. Back in the late 70's I had a 1967 Impala Super Sport that had a dealer installed A/C system. It used the GM compressor, and even had a Chevy bowtie logo on the housing under the dash, but it was definately aftermarket.
