Demon "Classic Air" AC Install

Went and checked their website for my car. Sure enough

http://www.classicautoair.com/?q=67_69_Barracuda_Air_Conditioning_Mopar_AC.html

I was wondering if cars without tinted glass would need tinting for the system to work correctly? I have been told that the glass would need tinting or the AC would not work at all!! I didn't really believe that but I don't know for sure.

Mulli, mine is in a rag top without tinted windows. Like I told 6pk, insulate the floor, a hard top might be better than mine as all I have is the cloth top. My unit blows 36 degrees running down the road.