Hello Ron
Thank you for the question.
We can do a 87" in one piece. Up to 96 we can make them longer but shipping is an issue.
If you give me the stud locations, yes we can put the keyholes to match your studs.
The best way is to give mall the locations from the left edge as your looking at the wall.
for example 4" from left then 20" 36" 48" ect.
Plan on 4 or 5 days to get it made.