I don't like divided runners and tuning the intake would be impossible.
  Why not use two throttle bodies?  It is the most simple, straight
forward intake possible.  Jerry

Very straightforward thinking Jerry. You can use a single throttle body, but it must be large, and upstream of a large plenum to allow the air to enter the bellmouth with the least turbulence. One throttle per tube is much easier for PP. Stick with what you have! The only way to improve on that is slide throttles. They would also be 1 per tube. I have a design I want to run by you and Ed. I think it would be perfect for your PP engine.

Bill Jepson