Which single plane intake?

dodge freak said

The RPM cam Eddy says to use is 232-240 @ .050, that seems big but I just swap from a single plane Holley Street Dominator to the RPM. My idle is smoother and low speeds is much better but after 4000 RPM is has lost a bit of power. The RPM intake like made my Comp HE 268 cam seem smaller. So it seems like that intake loves a big cam.

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Update, only had the intake on for 3 days now, today I removed the 3/8" open spacer I had on it and the motor seems to make more power everywhere. Funny, I tried jetting it up at first and that did not help but its so cold here in Michigan now-but streets are clean-I thought my carb needs all the heat it can get. I do have the exhaust heat open, helps keep the spark plugs clean and it only takes power away after the temps outside go over 80. I tried before blocking the exhaust heat, up here in Michigan its more problems then helpful.

Maybe the rpm is fine, you can always swap a few intakes and sell what you don't like on E-bay.