RPM Airgap or Performer RPM Airgap 340 SBM

I mentioned the heads because I wasn't sure if the manufacturer/style/model of the heads makes difference on which of the two would fit them. I have seen folks mention W2 or W5 heads etc.

Thanks
The Speedmaster intake will fit either and is comparable in design

Mopar Chrysler Dodge SB 318 340 360 MidRise Air Intake Manifold Satin