A simple question for those of you who have installed aftermarket AC units. I have a 67 coupe and wish to install a new glove box liner/insert. Eventually I plan to install Vintage Air or some brand of AC and I want to know if it matters which liner I purchase. I really don't know the difference between the two other than it must be the shape or the size. Just don't want to buy one and find out later that I need the other. Is one larger than the other? Thanks, J.R.