408 Stroker Short Block Details: Blueprint Engines

Ok, mind is running nonstop about things to try and finesse, timing, carb, and launching the thing. One thing I'm kicking around, along with tackling the basics (first) is that I haven't done the plenum divider mod to the Weiand Action+ Intake. Read alot on it, what's a general range of increase as it would apply to the times I ran in the 1/8. I'm thinking I should have done it to begin with.
i feel like an open spacer is a quicker test to any science you're applying there...unless i'm thinking of something different when you mention "divider mod"