Possibly looking to get a 17 or 18 switch sp or assault. May stick with the 600 as i have had great luck with the 600 in my 13 switchback. For those that have the 600 in one of these models how does it perform with the 1.35 x 144? Enough power? List the good and the bad if any from your experience with these 2. I know the sp is lower on premium shocks and bars but its a lot lower price.