Saleen Series 4 Set Up
 

I know these bolt-on $5,000 supercharges come with flash kit for the engine computer, I installed an 03/04 SVT Cobra instrument cluster in my 01 GT, will I be able to use the now dead boost guage for the supercharger if I went that route?, or will I still have to mount the extra guages. Also how do I drain the engine of gas before I remove the intake manifold?