Classic air

Hello everyone I’m going to buy a classic air for 72 demon and was wondering how it mounts up what holes will i need

The Classic Air System is designed for cars that came w/o AC from the factory. AC equipped cars have a different firewall & would require add'l fabrication. You didn't mention which you have?


How has the reliability of the system held up since you have had it for a few years?

My system has been installed for 6 years & still blows ice chips from the vents :D