Does anyone know what kind of power you can get and quarter mile times with the Edelbrock power package? Meaning edelbrock performer, intake, heads and cam. I already have the intake and I am trying to decide on what kind of heads and cam to get. Also, are there any reasons not to go with this package? Other than the intake performance mods include, mac cold air, mac exhaust, 24# injectors, granatelli maf, 3.55 gears.