other than just making enough space to fit the tires there are loads of other things you'll want to do before putting on 35s. there are lots of threads to read up on this site and others.
2003 Rubicon, 4.0L, 5SPD, Custom 4.75" lift, 33" MT Baja Claws
1999 SE, 2.5L, 5SPD, sold it
PM me for wheeling in and around Northern Illinois