[Polygon]

Well, the type they use in WRC is what I assume you're talking about. Anyhow, it isn't very streetable because it is going to destroy your turbo. They use it on WRC cars because they can afford new turbos and they tear down the car on a constant basis. The other problem you have is that this would not help off the line. The large turbo would still take forever to spool.

Just match the right turbo for your engine unless you're trying to build a dyno queen.