Well, the SRT6 has a very stiff suspension which has been discussed in a lot of magazines and in many of the forum posts. Most notable is when you hit a pot hole or bump. The damn thing feels like you are going over a 15 mph bump at 75! The Koni's completely take care of this problem without sacrificing any handling. In fact, it has a very smooth ride until you get it in the twisties, then it handles as good or better than stock.