dear bro in order to save ur car n ur time n ur $$$ plz buy somthing like a silvia or a rx7,the base has to be strong to hold up a 1.2k bhp car,+ this isnt a very easy job.ur making a fool outa ur self infront of everyone,if u wana do it anyway just go ahead ,meet some local modifiers n discuss it,people here ,some of them have v good knowledge n i think in my opinion rx8 is a bad car to start with for a 1.2k bhp setup
at the end of the day its ur money ur car,best of luck 
