the front seast fit with the runners swapped dont know if they will go straight on tho as for the rear seat the bottom half that you sit on strip the cloth of the escort seat and the leather of the sierra seat and swap them over then with the back rest part of the seat you make them so they are as 1 strips of metal across the back holding them together as they are a 60/40 split they will fit like this but they are a bit narrow and the bits that would go down the side in the sierra are too big so you would need to mak something of your own hope that helped