I have a question. Under the dash on the driver's side near the door but still in the ceiling under the dash, I have what looks like a 5 inch to 6 inch round hole. For the life of me I can't figure out what goes in the thing. It has bolts which look like something was originally there but I can't find it referenced in my 1967 Mustang Shop Manual from Ford. Any Ideas?
I just got this car maybe a week and a half ago and when I drove it home, I had a tremendous amount of air, I believe from the vents past the hood, rushing into the car from under the dash. Made for a cold 3 hour drive.
I really want to make sure this car is buttoned up against bad weather, so any help would highly be appreciated.
Oh BTW here is the car.
paulcalvinkennedy@msn.com