The card board glove box if it is the OEM 54 year old one it will tend to come apart.
Also DO NOT bend it at the "creases" new or old. ask me how I know.
I was able to put in a new 67 dart glove box (from classic ind, it was 99% correct down to the staples) by first removing the door, then sliding the box in drivers side first through the opening.
I know 68 up is a bit different but might work out the same.
Last thing... The position of the cable outer shething in the respective clamps determines the adjustment. ( where the lever sits in the off position for example)
