I am up grading my 09 Dana 30. Its getting 4:88, Aussie locker, inner axle sleeves, then 37x12.5x18 tires. The big question is do I need to add an axle truss, too? I don't do heavy rock crawling, only occasionally light rocks, mostly trail and mud. What cha all think?

 

With sleeves u will be fine without the truss.... Will it look cool for the extra hundred bucks? U bet ur ass it will! Lol

 

What size tires do you plan on running? I would get c gussets at the minimum. A truss if you intend to run 37's or ever plan to do any heavy crawling.