Found a free 99 bypass valve from my friends spare parts bin for his mustang to replace the damaged one on the VK45 manifold. Since it's a normally closed style actuator I had to reverse the mounting orientation for it to work in this situation.
A little test using the mighty cube as a vacuum source.
There will be a check valve between the solenoid and the vacuum port so it will hold the butterflies closed until the RPM window switch triggers the solenoid and opens them.
Last piece for the induction is a Nick Williams 103mm throttle body.