Louvers and Tint

Rear Window Tint Under Louvers

I installed rear window louvers in a 280Z (which is close to the same size and pitch of the later Mustangs.) From the point of style not much difference. For utility purposes, louvers alone will prevent the car and rear passengers from baking during a sunny day. With louvers it will be difficult to see through the rear view merrir, (it takes time to get use to) with the addition of window tint it may or will be more dificult to recognize objects at the back of your car.
Louvers and tint is overkill. We have rear tint on both Mustangs it gives the cars a better appearance and it keeps the cab cooler.