Under the bed rail system

[Phil/Shirl805]

Pulled the trigger on new 2015 F-350 DRW. Took truck off of lot, need to add under bed fifth wheel rails. Truck has a drop in liner

Question is will it work liner ? will also be using adapter for old Reese fifth wheel.

I do know drop in liner are not good for bed. (Currently have it for sale on Craiglist, may just Pull it out.) Spray in liner a few months away.