yes it does work, i have personally done it on my car, ill dig up my post about my build. it will not bolt to the stock manifold, nor does it use a triangle flange. it uses a standard 4 bolt mitsu flange that allot of their turbos use. i still have the fixture i built to duplicate the manifolds. i did not get one built to duplicate the downpipe / dump tube.
here is the link to the thread it has pictures of my car with the setup on it, there is also a dyno chart/ quater mile thread floating around also.
zerothread?id=136719
also right now im pretty much broke after moving the shop to a nicer building so id build one of these manifolds for 200$ and 15$ shipping i need some fun money to keep my sanity.