Mosselman makes a supercharger system/kit for $4,500 based on the Vortech. They will have a roots style supercharger available after the first of the year which is similar to Kleeman's also for $4,500. I would wait for this one. If you talk to them they will tell you their kits are for the SLK320. They have never been under the hood of a Crossfire. The SLK320 kit will work on the Crossfire.