Mr. Gasket 6005 Aluminum Carburetor Spacer with Open Center<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>1" open center carburetor spacer</li><li>Helps to increase power and performance</li><li>Designed to fit the standard Holley/Carter bolt pattern</li><li>Features a 1/4 diameter knock out hole if an additional vacuum port is required</li><li>Complete with studs， washers， nuts and gaskets</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41erpyrfzOL.jpg" noproxy>