I have an 1986 Cal 33 which I dearly love. The original owner installed a 12,000 btu air conditioner in the cockpit locker. The return air is just ambient air from the locker, it's not piped into the boat. The cold air comes out in the galled. Looks like they choose the easiest installation. Does anyone have the same boat with an air install on it? I was wondering where you located the unit, the return air and the air vent? Thank you