well mate msd is defo one of the companies you want to speak to about sorting your rs out as for uping the power abit then mines running stage 3 with t4turbo siemens 55lb injectors rs500 intercooler group a airfilter and full scorpion exhaust system thats just what i can think of off the top of my head but im not really good with these things either but what spec is yours at the mo??