I only trimmed the front wheel well plastic where the mud flap used to attach. I did not need to do any other trimming. I plan to get stiffer torsion bars at some point, but for now I haven't touched the torsion bars. I haven't experienced any rubbing, but I also haven't done any serious offroading yet with the new tires. I don't expect them to rub anywhere except the fuel filler line in the rear, which is harmless.
Keep in mind that Super Swampers run a little larger than most other brands. I wouldn't be surprised if a 32" TSL is a half inch taller than a 32" MT/R.