There are no pros to running AC in Supercars. No insulation in the cab, drivers are in full race gear anyway. The weight of the unit and the power requirements.
Ford fans be proud. History of Australian motor racing shows Ford has been and will always be superior. They have to slow them down when they get serious about racing. The Phase 4 scared the **** out of people, they banned it. Sierra gets called on a technicality, Falcon EF "...had its wings clipped to make Holden part of the show", AU not allowed to show it's potential, Falcon BF gets clipped. Mustang Is so good Supercars made up a rule and gets a bag of cement in the roof, and it still wins.