Hey Bill,
Assuming the judges have seen half a million 4A-GEs come their way, they ought to know which cars came with TVIS.
Considering the fact that we have the option of dyno tuning, should we ditch the TVIS? If so then we could pull the butterflies out and tig-weld up the holes. Then from the outside, we'd leave most of the system in place. Most of it is below the manifold anyhow, but if they are really meticulous, then they would know if it was missing.
The simple way would be to just remove the butterflies from the shaft & leave the shaft and the rest of the TVIS in place...