Check the listing for details. Small Block Exhaust Manifold Heat Riser Spacer Delete 66-80 Chevy w/gskt+donut. Condition: New. Listed at 53.00 USD. Small Block Exhaust Manifold Heat Riser Spacer (Eliminator) with gasket (gasket may vary from picture) and donut for various 66-80 Chevrolet models Camaro Chevelle Nova Corvette Monte Carlo El Camino etc. Check at your end that this is the right size and hole spacing to go with the exhaust manifolds that you are using. This is a spacer, or heat riser eliminator, not a functioning heat riser. We have heat risers on another listing. ID 2" Installs on the RH sideHole spacing 2 3/4" center to center About 1" thick. (Flat surface to flat surface.) For further info on these and other items feel free to contact us. Thanks for looking and bidding.Please note that Ebay rules require us to ship only to the confirmed address supplied with your payment. As per updated California Law (Prop 65) they ask sellers to put the following warning on listings. WARNING WARNING: CANCER AND REPRODUCTIVE HARM - WWW.P65WARNINGS.CA.GOV For international buyers taxes, fees and duties are the responsibility of the buyer.