I RECENTLY PURCHASED A MERCURY MONTEREY MINI VAN AND IT CAME WITH AN ORBITAL SEAT LIFT. AFTER SOME RESEARCH, I'VE DISCOVERED ITS A TAS-2500 model. IT'S IN EXCELLENT CONDITION. ITS MOUNTED UNDER MY ORIGINAL VAN SEAT, SO I WOULD LIKE TO KEEP THE SEAT ITSELF. COMES WITH THE BASE, WHICH JUST HAS 4...