Thanks for the pics.

More please especially filling in the plenum.

I'm thinking of making a peice of alluminum that would block off the plenum(one for front half and one for rear half) right at the runner oppenings and then brake a 90 on each one and block it off all the way up to the throttle body opening.

The other idea was to mill a peice that would block the entire bottom at the runner openings. Then make a duct to the bottom of the throttle body. First weld the duct to the bottom throttle body opening. Then cut the plate to fit the duct. Then weld the plate to intake and duct.

Yet another idea build a huge turtle onto the Hughes valley plate that would fill in the plenum and direct airflow.

Leon