the powerlog will help you out a lot man. my compg loves it. The mods in my sig are the same as what bio told you. I'm dropping to a 3.6 pulley first then scanning. If everything is good ill go to a 3.5. You might want to go with the Autolite 104's rather than the 605's. I'm concerned whether or not if they are going to hold up or not. The 605's are one degree colder than stock and the 104's are two degree colder than stock, so you know.