Action Plus, 360, or...?

Weiand Action+Plus {#8007}

Dual-Plane / 180* Design / Medium-Rise, with a Spread-Bore Carburetor Base.

Excellent choice for the; late-318, 340 and 360.

A very effective Intake Manifold across the RPM Range. Good power
and Torque from Idle-to-6000 RPM's.

High-flow runners will increase power, even in a mildly built engine.

Preferred for Street Performance Applications.

The mutli-level plenum design seperates adjacent intake-pulses
by alternating planes.

This enhances a strong individual Carburetor signal, that provides
for improved Bottom-End performance.

* Port Size > 1.96" x 1.00"
* Carburetor Height > 5.41"

That Demon 625 CFM Spread-Bore will work great on this Intake.

http://ecx.images-amazon.com/images/I/61XFFU+sn-L._SL1500_.jpg