Other than the fuel tank the original bodywork is gone, replaced by a universal Givi round headlight fairing, and some sort of custom or grafted on radiator support and unknown small brackets on either side, which also carry aftermarket lights. I think the radiator might be a larger unit from another model. There's also a hefty bash plate and frame protecting the engine lowers, but the left coolant hose looks vulnerable. The coolant overflow tank has been relocated further forward and the oil cooler moved to a lower position — curious for the bike's intended purpose, but may have been necessitated by the radiator mods. The forks, swingarm and brakes appear original while the handlebars are some sort of conversion.
Someone spent a lot of time and effort on this build. The bike actually cuts a decent naked-bike profile and, other than those rumbling tires, might make for a fun street ride. As for attacking dirt, gravel, ruts and bumps of off-road riding, I would be hard to convince that a heavy, high-revving V4 with limited suspension travel would be high on my list of choices.