I have it and think it's great. I have the system #7, which is a 2.5" lift using Tundra front coils with a small spacer and OME 890 coils in the rear. I think the one you're talking about is the same except it uses Landcruiser coils and shocks. I didn't buy that particular kit because (honestly) of the way it looks--it's a 4"+ rear lift and still only 2.5" up front--looks goofy to me, but everyone likes the way it works.

My 4Runner is a 2000, which got the "low rider" springs. Here is a before pic:


and after:


Just like everyone says, it rides better than stock. I just installed it last week so I have not had a chance to try it offroad, but based on the on-road feel, it will peform much than stock.