Two essential conceptual structures - geometric representation of Clifford algebra wavefunctions [1,2] and quantized impedances of wavefunction interactions [3] - are absent from particle theorists’ toolkits. Their synthesis offers a complementary Standard Model perspective, focusing not on Lagrangian flow of energy and information, but rather on what governs amplitude and phase of that flow - impedance matching of wavefunction interactions. Photon excitation of two-component Dirac spinor vacuum wavefunctions permits calculation of two fundamental constants - electric permittivity and magnetic permeability - and from these the scale-invariant 377 ohm far-field vacuum impedance excited and seen by the photon [4,5,6]. This suggests extending the method to near-field of the full eight-component geometric vacuum wavefunction of Clifford algebra [7]. Such a model offers maximally natural three-component massless neutrino oscillation via the additional vacuum impedance phase shifts [8], with absence of right-hand neutrinos required by failure of three-component associativity in the eight-component octonion algebra [9].