This paper identifies the precise sense in which a Modal Triplet Theory realization can reproduce classical four-dimensional General Relativity. The starting point is a ten-dimensional bundle over a Lorentzian four-manifold with compact six-dimensional fiber, together with a local covariant action whose gravitational sector contains the higher-dimensional Einstein-Hilbert term. That metric and action are realization inputs; they are not derived here from projection alone. We formulate an exact consistent-truncation condition and an approximate gapped version that bounds discarded modes and the induced effective-action error. When unwanted metric zero modes are absent, stabilized, or retained explicitly, the two-derivative metric sector reduces to Einstein-Hilbert form with the four-dimensional coupling fixed by the warped internal volume. Diffeomorphism invariance then gives the Einstein equation and covariant stress-energy conservation. The current MTT calculation also provides an exact finite-branch transverse-traceless helicity-two support certificate. It does not yet determine the physical Newton or Planck normalization, the complete stress-energy response, the cosmological constant, or a projection-only source for the Lorentzian action.
Peter Nero (Wed,) studied this question.