I tig welded up some handles to help lift the plenum off and on and they work well.
It was time to fill in the air gaps on the plenum to have all the air go through the cylinder fins. There is a spot on the back and the one in the front. They will be bolt on locations due to the shape of the block.
I also added a level inside the plane to get a reference from because I can no longer use the fire wall and the fuel strakes with the engine installed. The plane was leveled for the engine installation so the aluminum plate was riveted in and flox used to bed the level dead on. Once cured (2) days I will add 2 rivets to hold from popping off.