Manifold wise obviously dave cna do it.
Head wise we can do it as well, Turbo Dave ported both my 2JZ heads, our STI heads, Spoolins 690whp Honda Head, and some others. he has all the tools and a cabinet for doing it.
But if you want a more "corporate" name i would contact Geoff From Full-Race.com they just built his R14 AWD 240sx and hes getting into the skyline stuff alot not. I think he uses HEADGAMES






