Yeah, I went through the trouble of sourcing all of my parts brand new after they were discontinued.
I dealt with used aero parts for too long and ultimately decided new was the way to go.
Fortunately, the various people I purchased them from still had all of the hardware and japanese instructions new in their pouches.
I'm all for OE fitment. You can get a good idea of where I'm at on my Kouki S14 build.
http://zilvia.net/f/showthread.php?t=607875&page=3
I'll be doing the same on my S13 build.