Why not use the aluminum! cut it to shape, holes etc. Then scuff it with scotch brite, and prime with zinc chromate, then
paint your color. I redid a Chrysler out board hosing this way. Yrs. ago. Stripped all the old
paint off, washed it with acetone, primed with chromate. I let it sit and dry inside for about a week! Then I wiped it with a clean rag, and painted the
parts with Kryalon spray white. I
sold the
boat 10 yrs. later and the paint still looked like it was just done! This
motor was used strictly in
salt water, and was never covered. When I scuffed the skeg in the sand, it went down to bar metal, but the paint never pealed or blistered, at the edges of the exposed metal!