Sorry, this is the only pic I have left on my pc, I must have deleted when I sold. The fab shop that welded in mine followed the width and length of the blue prints and the Height was 2 1/2 at rear.
Those are a boughten set for James River Jets, they are made from Poly. Direct the water well and protect from minor contact too. Cost about the same as an aluminum bolt on set from OB jet.