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I don't think you are going to find such a manifold, and you will need to fabricate your owns one source of flanges and mandrel bent tubing sections would be Summit Racing.
You have piqued my curiosity, what are you up to? We need pictures!
Let's just say I have a ranger with an empty space the size of a turbo under the hood and it just so happens that I have a turbo and some misc. parts laying around...from my mental thoughts I have worked it out and it is possible.