Single turbo on dual exhaust

Single turbo on dual exhaust

I think Im' getting it, asking this question forced me understand the entire process which is good. On the steel side of things I was under the impression I had to use stainless can I get away with aluminumised (sp?) or should I just use stainless for the up and down and then standard for everything else? Also the headers are 3" collector so going to reduce to 2.5 then y back to a 4" for the up then have a 4" down all the way to the axles then then split to the dual 2 1/4" do you think that will flow or should I just do 3 up 3 down single exhaust to a twin tip coming out the center back (Like a Porsche)?

Backtobasics said
Sorry, I have been out of the loop, but it appears others are chiming in.

Prine's diagram is spot on, the only difference is the down pipe after the turbo would go under the car, and using the Y pipe I pictured above, would split from the one single down pipe into 2 pipes, to join the existing dual exhaust.
The picture you posted in post #10 is exactly what I have in mind. Where the exhaust crosses over to join the drivers side is up to you, but you are on track.

The beauty if it is all the tubing can be done in mild steel, and can be built with (relatively) inexpensive mandrel bends, chop saw or sawzall, and tacked or finished welded with a (relatively) inexpensive mig welder.