Heater box cable questions

Man, i would love to clearcoat the heater box housing like you did moparmitch. Problem is nine has so much composite damage that i have to repair, i will have to just have to repaint it semigloss black.

Trailbeast, my 67 cuda , and a 69 dart i used to own years ago are both 3 cable setups. That may have changed by your model year. Is your car a 73-74 ??