It can be found in XTRO:Primitives volume II, despite it not being a primitive vehicle itself.
It's pretty handy, but a little thin skinned because of how much mass that PPC and heatsinks use up. 24 points up front, 16 everywhere else. Since hovertanks tend to be so easy to immobilize, that's not necessarily as bad as it might seem, but still, you're probably best off keeping your distance and sniping with the PPC.