My truck has AC, but it does not work. I bought this truck on April 28th, 2018 and I haven't yet tried to clear the heater plenum of a Mickey Mouse nest. So the AC idea, must wait. I can not add a sunroof, due to the JCR Off Road roof rack, will hinder its opening abilities. I have thought about, somehow installing a 12v fan, within the tranny tunnel, but I have yet to locate a suitable fan, to even buy one! My rear slider, functions, but my spare tire, blocks some of the air flow and yes, I have already discovered that whatever is in the bed, it does find its way through the split window! And yes I have a headliner, but it needs reupholstered. I plan to replace the rubber seals as well as fully removing the interior and adding Killmatt to most surfaces. I also will add Napier hood vents, in order to help evacuate some of the under hood ambient temps.