My bro-in-law has an '03 Tundra, and the best mods he did for wheeling so far, which I have witnessed and rode in, have been an ARB bumper, Aussie Winch, Sway-Away coilovers adjusted to 2", and Bilstein 5100 shocks out back. He also moved all breathers to the highest point in the engine bay. Before he did the front coilovers, his ARB bumper/winch combo almost lowered the suspension 1.5", so plan on heavier rate coilovers up front.
I would forget any type of limited slips. All they do is still let just one wheel spin! I have had several, and seen several do nothing positive for traction, plus they act bad in the snow and ice. To me, there is no other option than a selectable locker.
1997 FZJ80, White, Locked, deflared, 5.29'd, 4-5" lift, Fox's, DC shafts F/R, 35" AT's, Metal Tech front bumper w/ winch, custom tube rear bumper, SROR sliders, IPOR skid, Custom exhaust, Snorkel, Eezi-Awn 1600, Mark's Speedo Box.
2008 Subaru WRX Wagon, mods and lifted on 27's
2001 Honda XR400 with goodies