For my own clarification...Referencing the 2016 HONDA GL1800B 2AC SEAT ASSEMBLY...
The standard F6B comes with mounting holes that are covered with plastic cover plates with no holes.
For an aftermarket passenger backrest or luggage rack, these two plastic plates can be removed and replaced (or holes drilled in them) to accommodate the left and right Backrest Stays, #14 and #15?
OR
The single OEM Honda Backrest Bracket, #12, can be used to cover the brackets, #14 and #15, and accommodate the OEM backrest and OEM luggage rack, Correct??
2016 F6B Standard Matte Silver. Freedom Combat Slip-Ons, BaggerShield 11" - 19" Sport Shield, Kuryakyn Ergo II Highway Pegs, Ultimate King Seat w/Driver Backrest, Pathfinder Running/Turnsignal/Driving Lights, Beeline Moto Navigation, INNOVV K2 Camera, DHS Racing Shifter Linkage Upgrade, Show Chrome Handlebar Risers and Luggage Rack.