Seatbelt measurement needed

I put my new floor in and forgot to drill a hole for the male ends of the seatbelts under the rear seat. I think the easiest way to get a ballpark location is to get a measurement from the female end of the seatbelt to the male end, bolthole to bolthole. I need it for both sides driver and passenger. Can anyone donate about five minutes to check it out for me. I have an 89 so somewhere in that area should be good. I am not sure if I even installed these correctly, they have been out for so long I cannot remember.
Here is a pic


Thanks
K

11 3/4" Passenger side from center to center

11 5/8" Driver side from center to center

This is off my '89 Larado

Many Thanks.

Katarn