Finally had time because of a company restructuring (2nd time - sucks) to put in my upper rear brace, front brace is coming tomorrow. Have $160 invested in the braces, the foam piece cost the most at $110. Still looking for the elusive rear lower brace, but the 15+ Nismo's only come with the 2 braces I'm installing. Figure I'm doing pretty good as the Nismo bracing kit is touching a grand new. In case you have never seen what I am referring to, here are pictures.
With foam insert installed, it's raining so will have to wait to button everything up.