My bed liner is cut out where my Fifth Wheel mounting frames goes. The hitch will require a good solid torqued mounted bolts. I would be afraid you would not get the proper torque with the bed liner under the cross members.
Do not cut all the way across the bed liner just when the hitch mounting frame goes...
When I pulled my 5th wheel hitch out of the truck bed after I didn't need it anymore I laid a couple of 1x4 pieces of wood to fill the cut out and then covered everything with my full bed floor cover. Can't tell the cut outs are there...
This is how my 5th wheel hitch was installed by the dealer...
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS