www.Austin7Ulster.com › Cylinder Block Base Shim / Spacer Plate (1mm Thick) Cylinder Block Base Shim / Spacer Plate (1mm Thick) £8.99 Aluminium spacer plate, for when your pistons are too close to the top of the bores. Thickness 1mm Aluminium spacer plate, for when your pistons are too close to the top of the bores. Thickness 1mm Add To Cart Added! You Might Also Like Inlet/Exhaust Manifold Stud (Long) £2.35 Cylinder Block - STEPPED short manifold Stud 5/16"BSF to 1/4" BSF £2.90 Sports Alloy Valve Chest Cover £40.99 Sold out Bottom Fan Pulley (Coil type) £21.99 Fabric Coupling £48.80 Sold out