I used mostly Vintage Air system in a 1970 Cuda, ( hemi auto ) All the underdash components are electronic versus the old cable or vacuum controls. I made adapter brackets to mount the under dash box to existing non air heater box mounting points in case the owner ever decides to go back to stock ( not likely )

Not sure where the owner got the under hood stuff from .
The car is limelight green black vinyl top and all black interior. I wouldn't say it will freeze you out, but its close .

If I was ever to build another car for myself ( not likely ) And its not a factory air car, it will get the Vintage air system