I am still searching the forum but have not run across the answer yet so I am going to ask the question. I recently picked up a 60/40 bench out of a 1994 extended cab. I installed the drivers seat with no issues. The other half of the seat however is a different story. The seat is to tall when sitting on top of the center hump. Is the hump on the 88 taller than a 94? Never would have guessed. Is there a different riser between 94 and 88. Any help would be appreciated...I will continue looking on the forum. Thanks D.