I was looking for some too. nobody that I have found makes them. kinda sucks
I wish it was Bose compared to this. 21 was last year for LF. to hear it better you definitely need it in surround mode. also hd radio sounds so much better. satellite sounds like crap. they compress the music too much because of bandwidth. I just recently started just streaming the amazon prime radio. sounds better. this headrest speakers are really for surround background noise anyway. I pretty much cant hear them or the ones in the headliner until I turn my head left or right or sideways aiming my ear up eat them. the speakers in the old fiero were louder but then again those were the rear speakers