One new rear stainless caliper piston and seal kit, part number 64326017/5434/2531-A2.  This kit includes four new 30mm pistons, two new 38mm pistons, and a caliper seal kit.  This is enough for one axle set.  The pistons are made of 316 stainless and this is for

• Lamborghini Espada 1968 - 1975