Blue Thunder certainly do two vesrions of their high rise port manifold (one is a Pantera specific low profile to fit below the screen).
CHI have a long list of manifolds for 3V applications, but don't address other H/R head comnpatibility on their website.
http://www.chiheads.com.au/3v_manifolds.php
We need someone who has the 3V heads to lay a H/R gasket over the ports and take a photo. I have a set of CHI 4V here still in the box, but they won't tell us anything.
As an aside I see CHI now do a 3V 400M spider manifold for those guys working on 400 installs. They also have new Kaase CHI heads that flow a whopping 400cfm at 0.75" lift.
Julian
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