So just get one new panel for each side if you need to raise it up a few.
Raising the height of a garage door opening.
If you wish for the door opening height to increase you will.
Older homes have smaller openings for garage doors making it more difficult to fit modern vehicles in.
These doubled 2 4 s should extend to the ceiling on both sides to allow for the mounting of the end bearings and brackets.
How to adjust garage door height step 1.
Set up your step ladder beneath the garage door opener being certain the ladder is level and stable.
Locate the limit adjustments screws located on the side of the opener.
The big board with the springs attached is necessary to span the door opening.
If you put them higher you d have more clearance with the door open or closed.
You d need to put a little jog in the roller track to get the top of the door to do right when it closes but other than that it should be doable.
Raising garage door height i think garage door panels are sized in 3 increments.
Doubled 2 4 s at minimum should be at each edge of the garage door to allow for the mounting of the tracks and jamb brackets.
Have you thought about modifying the tracks on the side for the rollers.
An exterior shot might help.
It is possible to install larger garage doors to give.