Max Wedge trunk battery hold downs

How did the factory attach the rear battery hold down bolts to the trunk floor pan on factory Max Wedge cars ? Pictures would be good.

there is are two mounts welded to the floor pan with a hole in each (lookls similar to the rear seat mount but with a hole not a slot)then a j-bolt goes into them

Is it sheet metal folded together and bent in a ( T ) or an angle?