I just reread the original post...with a stock 318 you would be better off with a small dual plane like the Edelbrock Performer (or something like that) that lines up well with the smaller ports of the 318 heads. The Air-gap would probably not run the best due to the ports being too big....like I said, the right intake is VERY combo dependent....what works well on one motor, might not work well on another, it depends on the combo.
