Thanks George! One less set of heads to pull. I got the Edelbrock's coming from DSC for the '73, then have to pull the '71's heads to replace the 2 piece valves after that. I just finished fabricating a new oil pan for the goose (raised and lenghtened it for ground clearance, it scraped on speed bumps even at angles) Whew! This is turning out to be a full time job!