Powerflex Polyurethane Bush kit for Alfa Romeo 105/115 Series - Spider Gt+Gtv Gearbox Mount Rear Insert Kit - PFF1-410 - This is an insert that is to be used with the original rubber 2nd series metalastic mount. The large washer/spacer sits either side of the rear metalastic mount inside the gearbox cross-member area once our insert has been installed. - Bush Size: - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!