This:
http://www.maxspeed-motorsports.com/986fullnhp32.html
Complete set-up, no drone, easy install, incredible welds (possibly robot-welding), sportcar's deep sound, but not annoyingly loud (the best part).
Passes smog test. Amazing performance upgrade is you love it in the mid/high range revs. Depreciation in the low revs (it's a huge pipe system after all).
Ask them a good price to slap in another ecu map (extra) and I promise you'll be laughing for more than $2,500.
Priceless