Very good question whether the passenger right upper back leather seat back will fit the driver upper seat back. One method is to only remove and replace the leather cover, the other is to replace the entire structure (frame) of the upper back but I think I read that seat warmer contacts are in diff locations (I don't have seat warmers but have leather-never hooked them up-don't drive in winter). Anyone out there knowledgeable if the passenger leather seat cover (only) will swap out with the driver upper seat back, and FIT! Help anyone??