I moved the air inlet on the airbox up for clearance reasons. I removed part of the airbox to make it thinner. Most of the cover with its large internal volume should fit. Pic 7 shows the inside with the 4 inch inlet giving a good dose of air to the trumpets. The two center trumpets are just visible. These are longer. All four may be long when I finish up.
Note the stiffening rail in the first pic is the one I modified and added to the throttle bodies.
I may learn to weld plastic to put a cover on the box. I have done some reading on it.
John