3" exhaust on a diesel Land Cruiser or Patrol with fewer than standard mufflers and the injector pump dialled up seems to be the norm around here... and then a load of wannabes with 4 cylinder HiLux et al... always plenty of noise, and varying amounts of go...
Makes my 3.slo petrol 4Runner with a 2.5" seem quiet (running a single BIG muffler)