Itís a dealership thatís installing a new cabinet. Iím not sure how theyíre fastening it but Iím hoping theyíre doing something like that. If I was putting it up yes I would definitely have some thru bolts through the bunk. If I had to drill some larger holes on top of the bunk with a hole saw Iíd go through the top sheet to access the bolts and then just put rubber or plastic plugs into them. Theyíre covered with a mattress anyway. Iíll touch base later this week and see if thereís any progress made. Being installed at a dealership they should be assuming liability on this, vs installing it myself.