My manifold is ported as well as the entry to the hotside. I can't tell a big difference, but it does seem to spool faster. In fact it spools faster than FerociousP's 6 port turbo.
As far as manifold solutions go, I have a tubular T04 designed for an FD. I am going to use an RB header flange as a spacer to clear the LIM, then go from there. Although I am very tempted to build myself a hybrid. I am not looking for super high HP anyway.
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1976 Mazda Cosmo RX-5
1976 Mazda Cosmo RX-5
2003 Toyota Tundra TRD
2015 Toyota 4Runner SR5
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