Tunnel Ram 383

ProStreetDuster said

If your going to run Holley Vacuum secondaries make sure you buy the Duel Vacuum diaphragm kit so the secondaries are connected and will open at the same time. http://www.summitracing.com/parts/HLY-20-73/
Also get two spring kits so you can adjust how fast they open.
http://www.summitracing.com/parts/HLY-20-13/

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I had read about the diaphragm kit, but I also read that since the Weiand tunnel ram has the space connecting the front and rear part of the manifold it is not needed.
I'm not saying it will not need the kit, just the reasoning some have for not needing it.

Thank you for the info.