The thing is I really just want the stock manifold back on. But I got a deal on the Cj manifold with the twin 65 that I couldnt pass up. So I bought it and installed it, it's only been on for about a month or two. Which is the main reason why I am trying to keep the CJ on there. If anything I'll just throw the stock one back on and then boost it. I'll see.
If going centrifugal, it pays to sell the CJ intake and use the money to buy the boss intake. The centrifugals shine in the upper rpm range. Boss manifold extends rpm range to take advantage of that. Will still be a monster with stock mani but the boss mani give you that much more rpm range. More rpm on a centri = more boost/power.