i installed the factory seat back kit to the end of the seat behind the captains chair. I paid $500 from the dealer and was made to understand that was below msrp. Because of the suboptimal factory glassed in backing plate, installation was somewhat involved in regard to beefing up the backing plate, but is now rock solid. I took measurements of the craz with the setback option at the dealer.

On a side note, Knox, I would like details on how your FAE is mounted. Mine is now mounted well, but only after some custom fabrication. Just curious about yours.
Thanks.