2651 bed framework

[mercury9]

We have a 2016 2651s with the large storage compartment under the bed. I'd like to put some L track strips in so I have a way to anchor whatever it is we're hauling. On the floor, I have access from the bottom. How do I go about finding where the framework is on the ceiling of the storage compartment/under the mattress?
thanks,
Jim

[n-e-d]

Took a look at my 2650s and it looks to me that your going to have to use a stud detector that'll find non ferrous studs or remove the two pieces that make up the ceiling panels

[mercury9]

Thanks for the idea. Hadn't thought about pulling ceiling. Went out and looked, not as easy as I hoped, but doable.
Jim