On my 2007 Wrangler, I added the hitch and wiring but no suspension work. On my 2011, the tow package was on the Jeep when I bought it from the dealer. My opinion is that the TSC is worth the extra cost. When towing my 5x9' utility trailer, the 2011 feels more stable and secure. I do, however, miss the 4:10 gears that were an option I had on the 2007 JK. When towing, the lower gear really helps. 3:73 is fine for the highway but not so great for towing.