This looks great, I hope to see you graphs when they are up. From what it looks like you are building this to increase the throttle response and low end pick up on the LE5, yeah? Those short runners and the tapered plenum would suggest so. What is the intake runner length? (if you dont mind me asking) I was looking into rigging a set of ITB's up, and knowing what the runner length on yours are would help with placement of velocity stacks.