I have the Daystar 1.5"/2" spacer lift (no upper strut plates or sway bar bushings), and haven't felt the need for longer bump stops. If you're carrying a really heavy load, longer bumpstops would serve you well, especially when the vehicle is flexed (one side of rear axle all the way down, the other side tucked in the wheel well). If you drive terrain that doesn't require a high degree of articulation and flex, I wouldn't bother with longer bump stops. After 10,000 miles of use, my Daystar kit has been fine for "light" offroading.
You really only need new sway bar bushings if your original ones are worn soft and/or cracked. Mine started wearing out this winter (they're noisey in cold weather), and I will replace them this fall. I paid $20 for a pair of OEM rubber ones from my dealership. I will pop them on myself. Search this message board to find instructions; Jeepjeepster posted clear instructions for doing this. It's pretty easy and will take only 30-60 minutes.
Depending on who you talk to, hard rubber is better than polyurethane for sway bar bushings because poly doesn't absorb as much energy. Some say the poly sway bar mount bushings let the stabilizer bar slide too much, which detracts from the bar's performance. It needs to be held firm against the frame; supposedly Jeep's hard rubber bushings grip the bar better in the frame mounts. For $20/pair, I don't mind swapping them out every 3-4 years.
_________________ 2003 Liberty Sport
Bright Silver Metallic
Daystar lift
General Tire Grabber AT2 245/70R16
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