This is more of an fyi/warning than asking for help.
http://www.stillen.com/product_files/402852~inst.pdf
Note step 12, where it says:
"It may be necessary to install a piece of
silicone hose between the drivers side
lower tube and the A/C lines to keep
them from rubbing. Split open an extra
piece of silicone breather hose, wrap
around the A/C lines, and secure with zip
ties."
Being cautious, and wanting to defer any problems to my warranty, I had the dealership install it. The above wording sounds like a "it _might_ be ok if you skip this step." If you're having someone install it, or doing it yourself, DON'T skip this part. A/C lines were shot, and they're fixing their mistake under warranty now.
AND I'm stuck with an Altima loaner for now. Came with the boat suspension package I think.