I just ordered a 3" lift kit for my 01 XJ, I want to try and fit 32s. Is that possible and how much trimming would it take?

 

Yes possible. Will need to trim flares and you'll want wheels with 4"-5" back Spacing. Extended Bump stops too. There is a lift and tire thread that's a sticky thumb through. Not my jeep by the way. I did have 31s on a 2" budget boost though with minimal RUB with stock bump stops and tj rubicon rims

 

Here is budget boost with trimmed flares and trimmed bumper end caps and 31s

 

If your ok with the normal cut and fold you'll be fine. I'm running 3.5" on 33s but I'll probably be closer to 3" when and if I ever get everything sorted out.