Not trying to blow smoke here. The previous two posts are defenitely right on with their advise.

If my X was not paid off I would be trading it in a second.

There is nothing you are going to be able to do that will be reliable that is going to get you near the 250 hp's being generated out of the factory 2005 set up. Adding aftermarket SC will create some problems or at the very least some additional work... because non SC motor will not like the added pressure for very long which will lead you to have to much work to the motor.

It is a matter of how much time and money you are going to want to spend in the long run once you start experimenting with fundamental engineering changes and problems you will create. The reality is that SC is not as simple as just bolting it on and driving it away...