Intake manifold construction

[vex]

I'm planning on constructing a new intake manifold for my Turbo-6PI as i'm tired of the cluster F*ck of lines and crap that aren't needed. I need to understand the basic principles of manifold construction and the math that goes into the proper sizing/construction of the manifold itself.

The basics prior to the start of this thread:

(I'm going to use my build philosophy as the basis of discussion)
Let's assume this is going to be for a street driven vehicle with NA S4 rotors and a T60-1 Turbo that will see track days, hpde, and Auto-x. It will be driven there and back.

This manifold will be replacing the intermediate and upper intake manifold with a minimalistic visual interruption philosophy. That basically means the manifold can be as complex as it wants so long as it's visually simple, ie: no extremely complex external shapes, no sharp bends, etc. Internally it can be as complex as it is reliable. Internal of the manifold velocity stacks, electronic runners, etc can be used so long as the probability of failure is less than .1%(just a random number).

Also consider that it will be using dual fuel system on the runners. IE: Alcohol, meth, or NOS on the primaries and pump gas on the secondaries. Assumption of enough fuel is given for any specific setup.

Turbo may be able to out put anywhere from 5psi-25psi depending on setup needs.

Assume suffcient cooling abilities from all heat exchangers (oil cooler, radiator, etc).

Any more information can be garnered during the course of the discussion.

Here are the preliminaries:

Sizing a TB--Is bigger always better?
Multi Venteri--The more the better?
Pneulum Geometry & Volume--What is the best shape and why?
Runners--Length, shape, diameter?

Ready? Go!