So, while adding new-age air conditioning to a middle-aged muscle car is certainly a worthwhile endeavor, it is also a fairly involved project that will consume the entire weekend, require a good assortment of hand tools, and access to a special "bead lock" crimping tool for installing connector fittings, or a shop that can do the job for you. Plan accordingly. For our installation we ended up removing the front seat, the complete dash, the passenger side front inner fender, hood, radiator, hood latch, and the grille assembly. With all that out of the way, we were finally ready to begin our installation.
Of course, once you've completed your Vintage Air installation, you'll still need to have a vacuum pulled on the system to evacuate it and determine if you have any leaks. If you have a leak-free system, you'll be ready to have R-134a refrigerant added. But unless you have vacuum pump and a refrigerant recovery and service unit at your disposal, you'll need to take your Chevelle to a professional automotive A/C shop to have them put the final touches to your new Vintage Air system. Be sure to follow the instructions and charge with 1.8 lbs. of 134a refrigerant. With that done though, the inside of your Chevelle will now be just as cool as all the other upgrades you've done to it!