I looked into it a while ago and even bought a WRC flange for my Zetec to have a EGR system for mild antilag. I even preliminarily built the manifold but never totally finished it.
For simplisity I decided to go for a black iron manifold. The odd olive colour is from the ceramic coating. And no jokes about the tiny turbo, it's just for trial.
I haven 't ditched the ideal of EGR yet though because I like the idea alot and I know my jet engines.