How and when should you consider changing to lower comp. pistons i.e. 9.0:1 & 8.0:1 and aftermarket connecting rods.Also what type of head work should be done if the lower comp. pistons are installed? I heard that if you are runing either a supercharger or a turbo with the introduction of nitrious you should lower the comp. and that in turn will allow you to run a higher boost. Was considering a JRSC. I already have a Zex kit coming with a vibrant intake tube and the new Zex Ejector air amplifier and purge kit. I know the basics of an engine, but when it comes to F.I. I would rather ask the experts. Any advice would be of great help.