Try Kevin Kay Restorations for your Aston Martin parts needs! We have both new and used parts available. We use these trick Stainless Steel band clamps on the exhaust systems of the Aston Martin cars, which have a real problem with ground clearance anyway; you don't need a bunch of cheesey U-bolt clamps hanging down! The pipe diameter on these cars is 2.25 inches, but these will go bit either way in size. They exert a tremendous clamping force; cut off the tag-end of the T-bolt after tightening for a super-sanitary installation. Price is per clamp. Check my Me page and trust my 100% Feedback. Thank you.