Question on floor opening for A T

There is a at least one thread here somewhere, with measurements. Maybe more.
Otherwise it should have been indexed and marked prior to removal.But then you already knew that.
http://www.forabodiesonly.com/mopar/showthread.php?t=60607http:
and http://s88.photobucket.com/user/360scamp/library/A-body%20console%20tech?sort=3&page=1

and http://www.forabodiesonly.com/mopar/showthread.php?t=311352&highlight=console+brackets