www.Austin7Ulster.com › Top Water Manifold Stud for Low Compression Head 5/16 BSF Top Water Manifold Stud for Low Compression Head 5/16 BSF £1.80 Standard Top Water Manifold Stud for LC Head, 5/16 BSF Standard Top Water Manifold Stud for LC Head, 5/16 BSF Add To Cart Added! You Might Also Like Clutch lever arm set - 4 speed £39.99 Oil Pump Vane Springs - Set of 2 £2.50 STD Top Water Manifold Gasket (Low Compression Type) (Stiff Cardboard Type) £0.80 Cylinder Block - STEPPED short manifold Stud 5/16"BSF to 1/4" BSF £2.90 High Compression Head Gasket H.C. £32.00