Add Memory Seat buttons?

[jc_09_250]

I just picked up an 09 XLT F-250 6.4 and am thrilled with it.
The sole frustration so far is that the power seats don't include a memory feature (truck has a bench with full power).
Apparently a memory feature (1 , 2 buttons by the driver's door lock) is included in other models.
As we go back and forth between my father and me frequently, would love to add.
My hope is that given that i've got power seats I may be able to pick up the switch and other needed parts - perhaps its prewired??
The manual also notes that memory settings can be recalled with the key fob or the door keypad (which the truck has), but I believe you need the memory setting buttons inside.
Thanks a ton.

[po-po 5.0]

Depending on the package (XLT, Lariat, KR) its probably NOT prewired.