Yes Rodney still has replacement bladders.
Only the driver's seat has them, they will not work with the OEM leather as it is too heavy (I have tried). They work fine with Mr. MIkes pleather.
Don't really use them myself, maybe on a long trip but we don't use the car for those anymore.
BTW there are only in the seat back, there is nothing in the seat portion sides ALSO, the seat if not any less comfortable than the standard 88 seats (the padding is the same).
[This message has been edited by Mickey_Moose (edited 08-31-2015).]