Your right, I should change my entire setup and go with a single 3076, and be just like everyone else, why didn't I think of that? Nevermind the money I have invested in my current setup...you cant take it with you right?
On a seriouse note, I'm way beyond a single setup at this point. A compound setup is what I had planned from the first day I bought my TT and I'm sticking to it. It's never been done before on a TT, which in my opinion makes it much more bada$$ than any single turbo setup. And with or without a little flapper on a twinscroll, I bet I still spool faster than any 3076 out there.
Top end wise I think Ill be ok. Most of the exhaust gasses are going to bypass the smaller housing through the wastegate anyway, so it shouldn't hurt my top end too much. Right now we are going to run a 38mm Tial, but if it proves to be restrictive then we will put a 44mm in its place.