FYI, Fox recommends rebuilding those shocks every 10k miles for off road only use, and at much higher milage intervals for on road only use (90k maybe) I think maybe you'd be somewhere in the middle with a TC.
I have the non-adjustable versions on my JK because they came with my Mopar lift. Have no complaints.
For that price have you checked in to King shocks....supposed to be better than Fox for a few reasons which escape me at the moment.
You sure Ranch 9000XLs aren't available....for a dodge 3500.....got em on mine, granted it's a 2006, but find it hard to believe they don't have them for a 2013....got mine in 2006 when I bought the truck.
Either way, good luck with the purchase! Hope it works out well!
hbski