which intake to use on stock 318?

I know you are trying to help, but that is a bit silly... I like how someone asks a question and 1. We don't answer their question and 2. Go running down the road, for weeks, recommending all sorts of things they may or may not care about or want to know. I think it is better to answer the question and then give recommendations. Lots of us here have you beat by 10 years of experience or more. We also know a little about this subject. I doubt one could tell a huge difference between a Holley Street Dominator and a Performer on a stock 318 with a 625 cfm Carter AFB. I'd bet both will beat a stock 318 2 barrel carb hands down. As for stopping by to race, I do drive through IL on my way to SD but am rarely in race mode having driven all day from Stinking MD. Also I would not like to get caught going as fast as any of my Barracudas will go. All that being said, I'm not afraid to run anyone. I build what I want and for how much I am willing to spend, which means 273's, 340's, or 383's, high winders all. That does not mean I haven't built other engines for other people.

At least I answered the OP question.