I am in the process of upgrading Superduties and since extras mean nothing on trade-in, I pulled them out.

Kenwood Nav/DVD/CD/Bluetooth/etc.... $500. (software was just updated.)
ICON Dynamics adjustable track bar,,, fits '05 and up Superduty trucks..... $200
Factory door tweeters,,, fit '08 -current Superduty,,, $50
Dual 10" sub box with Kicker shallow mount subs,, custom fit for behind rear seat of Superduty crew cab,,, fits 99-current Superduty... $300

A few other items I have:

BMR rear track bar,, new in box, black color,,, fits SN-195 chassis,,, $120
Flowmaster OUTLAW axle backs,,, used for a day,,, Fits '11-'12 GT/GT500,,, $300
Billet Steel Flywheel for modular motor, 8 bolt crank,,, accepts 10.5" and 11" clutch,,,, $50
Diablosport Predator chip,,, will need to be sent in to have programmed,,, FREE

Having trouble uploading pics. Feel free to PM with any questions. THANKS