I recall seeing those 20v manifolds in the South African thread some time ago, very tidy.

The only gripes I have with those manifolds and their DCOE, DHLA, PHH equivalent is that they are very squat, the flow path is quite a bit more curved than say a Tomei or Pierce equivalent. I suspect this is due to their being designed for fitment to the FWD A-Series Pulsars as well, where there are spatial restrictions (firewall). So, arguably, these are the best all rounder for fitment across the fleet.

For those who like the BIG ports, be mindful that the subsequent deep pocketing created for the manifold studs in the runners on this manifold will limit your porting extent compared to what you would have available in say a Nismo or Tomei equivalent.

Having said all that the pricing is good, just make sure that the chosen shipping method is not the slow one. I waited 8 months for my Rowland manifold to arrive in Aus from SA (not bought directly from Rowland).

And for what it is worth, the casting finish IS much coarser on the Rowland manifold than other available equivalents, no big issue though but certainly worth the mention for those who are specific about finish. There might be a change between the early and late ones though?