PBGALS--- Your best source for VX specific floor mats is either eBay; fellow members here on this forum, or our authorized Isuzu parts guru "MERLIN" (fellow member).
To prevent gawkers from peeking in your rear cargo area, TINT your five(5) rear windows with WINDOW TINT (Mirror-tint or Limo-tint). The Five(5) rear windows are: Two(2) mini-windows in front of C-pillar; Two(2) large 3/4 windows behind C-pillar, and one(1) Rear Door Window.
Regarding dog transport, check-out these two(2) specific threads by doing a "search" on this forum:
For Metal Cage Dog Barrier's, search: "CARRYING PETS IN THE VX"
For Protective Seat Covers for Dog's that ride up front in the passenger seat with muddy paws, search: "SEAT COVER SOURCE"