  The "zitterbewegung stochastic mechanics" (ZSM) answer to Wallstrom's
criticism, introduced in the companion paper [1], is extended to many
particles. We first formulate the many-particle generalization of Nelson-Yasue
stochastic mechanics (NYSM), incorporating external and classical interaction
potentials. Then we formulate the many-particle generalization of the classical
zitterbewegung \emph{zbw} model introduced in Part I, for the cases of free
particles, particles interacting with external fields, and classically
interacting particles. On the basis of these developments, ZSM is constructed
for classically free particles, as well as for particles interacting both with
external fields and through inter-particle scalar potentials. Throughout, the
beables of ZSM (based on the many-particle formulation) are made explicit.
Subsequently, we assess the plausibility and generalizability of the\emph{zbw}
hypothesis. We close with an appraisal of other proposed answers, and compare
them to ZSM.
