Fastback Owners Seat Belt Anchor

I just purchased the same belt kit for my 68 Coupe. Is there a hole for the upper mount if the car didn't originally have shoulder belts. I peeled back the liner along the edge and found a bracket that is an inch or two behind the chrome edge on the rear window that is double thick but the piece of metal towards the interior only has a small hole. Is this the place they mounton a coupe?

John, I have a bench seat and with the seat back where I want it for leg room the recoil end of the belt set won't fit in between. I was figuring I would mount the long bracket to the floor and the recoil to the bracket so it sits a little higher. Do you have buckets and does it fit OK.

I saw these belts from XV Motor Sports in a 69 Road Runner a couple of weeks ago and he had a bench and he had to mount the recoil at an angle pointing back to fit.