well, soon I have to start work on a custom design for my v6, these will need to be a 3 into 1 design, both of which will merge down the line to feed the turbo, since I am a newbie at this type of thing I wanted to ask some advice as to the size of the primaries I should use as well as the length they should be before merging, in this case flow is more important than quick spool time since the turbo I'm using will spool fairly quick in any case, if it matters, the motor is a 3.0(bored to 3.2L) v6 from a Ford Taurus SHO, any help is appreciated