I had bought a 69 440 fresh air air cleaner base and lid from Ben and had a local sheet metal shop fabricate it to reduce it's height by 2". Worked great for a single carb air cleaner for non fresh air applications in case anybody is doing that. Gene gregory also did the ground work I understand for the base plate for the 2 4bbl marine intake that Mopar sells. This is available from forhemisonly.com. I think his name is Tim Banning and he was telling me that he re-engineered this plate after Gene did it as there were problems.