I have a Vintage Air set up in my 47' Morris street rod. It gets hot here in Nevada and the AC works great. I would part-time for a Hot Rod shop and we sell Vintage Air more than any other company.
The small universal AC kit with heater and defroster fits in the Jeep perfect. It doesn't hang below the dash.
And yes the heater is better then the original Jeep.
A Vintage Air unit will be one of this summers project for my CJ.
80' CJ7, 360 Howell Injected, 3" single exhaust, NP435 4spd, Dana 300 AA clocking ring, Currie twin stick, Tera-Low 4 -1 kit, Dana 44 front, cut 10" wider to 63", 4.10 gears, ARB, Yukon axles and Super H/D u-joints, Currie Dana 44 rear, cut wider to 60 1/2", 4.10 gears, ARB 35 spline, Currie 35 spline axle shafts, 2 1/2" x 11" Ford drum brakes, CJ-SOA conversion, Tom Woods F & R drive shafts, Warn 9500i winch, 6 point cage, Homemade F&R bumpers and tire carrier, 1" body, Pro Comp supension Kit, 12.5x35x15 BFG's, 15x10 OMF beadlocks, Body armor, OBA.