The strut attachment bracket (L-5) come pre fabricated so I clecoed on to the wing spar and fed through the skin. The skin did need to be filed a little larger to accomadate with out any rubbing. I fabricated the L angle ro additional support as per the plans. A couple of refrence errors in the plans but I noted for when I am working on the right wing. In picture 3 there is the bracket that is under the strut bracket, this will be riveted to the struct bracket and have a bolt hole drilled through to accept the wing strut.