Man you are going WAY over-kill with the Edelbrock Victor heads. Don't get me wrong I want a set BAD but I gotta wait till I need new pistons because those heads require them. My Friend got his small block ProMax heads from Jegs so it may be worth calling them. I also talked to the owner of ProMaxx a couple of years ago but I have to many Edelbrock heads on my shelf now. Not sure I would run that Victor head on a 318 but that choice is yours.