Deadbolt lock size for 99 American Eagle??

[DXK]

The previous owners of the rig had some modifications made to make it wheelchair accessible, which somehow involved removing the deadbolt lock from the door. I investigated the door and door well to see where I would instal a lock and found that its all set up for one still. The inside of the door well has a gaping hole that has since been covered by a sunglass's case, the out side of the door well has been bondoed over and painted. The door has a deadbolt lock plate installed on it still (the part the actual bolt slides through), though the hole seems strangely small in comparison to the typical house door deadbolts.

So I pose the questions;
Is there a special sized deadbolt lock that I need?
Is there a certain place I need to look to pick one up?

Thanks all!

[nightriderrv]

Need to measure the set back - edge of door to center of hole - if it standard size the ones at any home center will work