Stene makes the fiberglass parts that the others sell as their own. I bought SA-0431017-1 from Stene for my 150K and was pleased with the quality (fits 150F, 150G, 150H, 150J, 150K, 150L, A150K, A150L). The hardest part of the installation was measuring for the VOR whiskers, if you still have them.
