Thanks everyone. I added some pics to my album that show intake better, early mock-up. My plenum is steel and stays cool even though the offy manifold gets hot to touch even without running coolant through manifold. I made a shield to try to direct heat to plenum but did not have much affect yesterday. Plenum no longer was sweating but hesitation still there. I am going to remove plenum and fabricate a water jacket around bottom . Pappy, a friend of mine took pictures of an engine a few weeks ago at a cruise in I think was Padukah. Sure looks like yours. Beautiful car and fabrication. You are a craftsman. Mike