HomemadeTurbo - DIY Turbo Forum - Manifold building suggestions

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Manifold building suggestions

I'm gonna be building a manifold for the Z. Due to the fact that a Holset will soon be making it's home in my engine bay and I need a external wastegate for it and the stock turbo manifold won't with the t4 flange and the need for the WG. Question is that since it's got a divided exhaust housing should I pair three cylinders for one of the housings and likewise for other half or just have all 6 cylinders routed directly into the exhaust housing and not split it? This is a very very very crude example of the manifold I was thinking of making that would split the manifold to feed each side of the exhaust housing. Don't worry it won't look like this and be shorter so I won't hang down so much since all I had to work with were just straight cardboard tubes at work. Everything in black are 90 degree weld-els and and then just T's. Comes out to a total of 8-90's and 5-T's. All done in mild steel cause it's gonna be wrapped in header wrap to help keep heat out of the intake manifold above it so I don't need the stainless and won't have to worry that much about cracking as much hopefully. Suggestions, comments, big boobies pics, other ideas.
http://img.photobucket.com/albums/v1...doggahs170.jpg
http://img.photobucket.com/albums/v1...doggahs169.jpg
http://img.photobucket.com/albums/v1...doggahs168.jpg
all to go here under the intake mani.
http://img.photobucket.com/albums/v1...doggahs171.jpg
Gotta love these awesome Datsun heads ::)
http://i4.tinypic.com/10fuxdi.gif