How many miles? I doubt you will find any power steering upgrades, nor should you need any for 35s.
If you want to dump some money (for no good reason) put a hydro steer set up on it!
2012 F-350 KR 6.7, Crew, SB, 4x4, 3.55 E-lock, Golden Bronze/Adobe
Carli 4.5" Pin Top with full rear leaf packs and long travel airbags, Air-Lift Wireless Airbag controller, 5 gal on-board air system, AMP Powersteps, Line-ex, B&W Hitch, BakFlip F1, Kenwood DNX-9990, JL 700/5 Amp, BA Pro SE60 (Front) and SL60 (Rear) Components, 2-Phoenix Gold XS 10", Rigid Ind 20" E series light bar, 295/65-20 Toyo Open Country M/Ts on factory rims
Sold - 2005 F-250 Lariat 6.0 Crew, SB, 6 Speed, 4x4, Wedgewood/Tan
2008 Hydra-Sport 23 Bay Bolt w/ Etec 250
2003 Sonic Blue Cobra 666rwhp 600rwtq,
1997 Jeep Wrangler B3.3T Cummins, NSG370 6 speed, Ford 8.8 rear, Dana 44 front, 37x12.50 PitBull Rockers