Intake design?

[tt_skylark]

I have the ability, tools and time. Only to make it once, I hope.
I started my turbo buick 350 65' skylark project, I just finished a tool for my press to bend up the runners and keep finding conflicting information on intake runner length, taper, plenum size and overall design.

Can anyone point me to some solid information to calculate these variables?

Thanks!!!!!!