Lots of kits to pick from. I have run rubicon express 4.5" short arms on two my jeeps, the other had a Rusty's off road 3" kit. The long arm kits are nice, but they do charge an arm and a leg for them. a 3-4" kit will be fine for the 33's. Which ever kit you decide on, get a complete kit. What I mean by that is, 4 springs, 8 control arms, all adjustable if you can, front and rear track bars, sway bar disco's etc etc. Also the type of shocks you run can make a big difference. As for the short arm vs long arm debate, both good and bad points. Also don't forget about $$ for an SYE kit and rear drive shaft if you get a taller lift.