I picked Viper Mtn, but it really started out as a 2002 Viper (one of the first ones). It has a Viper Mtn tunnel, a Nytro XTX skid, a 2003 bulkhead, belly pan and radius rods. Also an aftermarket seat, trailing arms, handlebars and misc.
The gas tank, engine, and other plastics are all original.
It is registered as a 2003 Mtn Viper because of the tunnel.