Advise on drilling
 

For the diffuser I am making I have an idea for mounting but I need someone who knows if it is ok or not to drill holes where i plan to. The location is on the corner piece on what i believe is the rear strut brace (i may be wrong with that). The pictures show where i plan to drill. Would drilling two small holes here cause any faults in the structural integrity?

http://i1030.photobucket.com/albums/...psjzyhuulh.jpg

http://i1030.photobucket.com/albums/...psn7xthujh.jpg

http://i1030.photobucket.com/albums/...pspcjv1tks.jpg

Haven't drilled on the ~Z~ other than boring out the upper radiator core support a bit....i'd say you good; that's the thin webbing overlay-shouldn't weaken anything.
I was more noticing your oem rear diff. bushing...changed mine a bit ago (real peckerhead with hand tools)