Definetly gonna want to do spacers. I went with 1.5"'s all around. Are you doing a body lift and torsion twist or just a torsion twist up front. I did a 3" BL, shackles in back, 2" TT up front and I still had rub bing on the cladding up front and had do so extensive cutting/trimming to be able to turn the wheels. Sometimes with suspension flex and wheels turned up front I still get some rubbing on the back of the fromt wheelwell and body.
