Jason, I'll check out the SSE SC'ed parts car for the condition of the grey headrest'*. I know they tilt, but I can't vouch for their show quality due to them being exposed to the elements since 2001. Hopefully they just need a good cleaning.
One thing you should know is with these headrest'* in your non-12-way seats is the HR"* won't adjust up and down (at least they won't stay up) as the stock shafts that go into the seat have slots on the back side and these tilting headrest'* only have one sloton the inside of each shaft.
I have a pair of tan tilters in my SSE, but next time I'm in Gordy'* neighborhood I have to swap for the non-tilters.
I'll try to remember to stop by and check them out tomorrow and maybe I can drop them off at Gordy'* on Tuesday on my way to The Quest night club for AlterBridge'* show (no I didn't pay for 'em -I won em).
I'll PM you about their condition as soon as I find out
P.*. No your leather cover'* won't work as they aren't slotted for the tilt.