Here's what to do. Take some aluminum foil and crumble it up into a loose ball at least 4 inches in diameter. Place it on you current air cleaner. Shut hood. Open hood. Measure the thickness of the aluminum ball which is now somewhat flat. If it's no more than 3 inches thick, then the RPM intake/carb/air cleaner should fit under the hood.

The Edelbrock RPM intake is just under 3 inches taller than a stock iron intake. So, just to be on the safe side, say it's 3 inches tall.