the location on the original pistons when i bought it were higher than the vito's piston. The cylinders were 5" and the case deck is 2 1/2" to the top of the base to the bottom of the jug " The vitos's part #V96870M68 and its about 1/8" or so tler than the piston that came in it which have the markings 8590H, 8963 and 69.95mm.