Eddies Vs 915 J's

That's a ton of head with 2.08 valves on a 318. I made the mistake of overheading a 318 and I saw 0 gains whatsoever. In your case I think the otb eddys with a little port match and cleanup will be perfect and don't overcarb it, it will be a waste. That engine can only use so much cfm and the rest is just a waste. Yea they look cool and may help at 6000 rpm a little but I would stick with single 4