The only way to do this is is stainless, a mild steel manifold
holds up fine, but begins to flake on the outside, and I don't
know if it flakes inside, it could send crap through the turbo
causing problems, or it could plug your Cat (if equipped) but
a fair price for a custom manifold, all stainless, schedule 40, all
professionally TIG welded is about $250-300
I was looking at the import stuff, found a manifold that fits
the shape requirement but it's still almost $200 and needs mods
to fit, and I have not fitted one so I'm still not sure it would be
exactly what I want under the hood
Wild