i bought a 2000 mitsubishi eclipse rs mint condition had some problem put about 2000 dollars in it to get it back to stock performance all that has done to is aem cold air intake and a upgraded cam gear and its got a greddy exausht pipe but not whole system i need to know how to rebuild this engine and what to do to it to getting it to push anywhere between 450 to 600 hp the more the better any suggestions please let me know