you shouldn't, ive heard the unibody isnt strong enough up front. (maybe the guy was trying to sell me more shit, i could be wrong). if you go to rustysoffroad.com he has zj radiator supports which are really beefy and have two tow hooks. the whole thing is like 150 and it improves your approach angle, along with protecting your radiator.
By the way, i like the new zj you got. i saw the pictures and that thing is bad ass.