67-72 A/C control panel Question

[lux]

I'm going to instal the Vintage air SureFit kit. I have a non factory air cab. The confusion I have is about the control panel, Do I need the factory A/C panel or the non factory A/C panel? I'm guessing the non version was for trucks with heat only. I know the kit only uses the 3 sliders so either would work, but in the photo the mounting screw holes look to be in different places on the two.

Any wisdom on this? When I bought my truck it didn't have either one of the controllers.