Upgrading the vehicle for heavy duty or for using specialized equipment it's not designed to be used with. Upgrading may include: installing a fifth-wheel coupling with a subframe, equipping the cab with a berth, double-glazing for the cab, installing a lower drawbar, frame elongation and strengthening, etc.

List of options 

• Installing a fifth-wheel coupling with a subframe

• Equipping the cab with a berth

• Installing a subframe under the fifth-wheel coupling

• Installing a double cab

• Installing a jib crane

• Making passenger crew buses into dual-purpose vehicles

• Installing a lower drawbar

• Making the crew-bus cab more comfortable

• Fuel-system heating

• Frame strengthening and lengthening

• Installing enhanced springs

• Upgrading the exhaust system

• Thermal insulation for the cab and the berth

• Sealing the transmission, the chassis units, and the braking units

• Electric heating for the wiper-brush parking zone

• Driver-seat heating

• Battery compartment heating by the ICE cooling system

• Installing panoramic rear-view mirrors with heating

• Single-wheel snow chain

• Liquid heater for the engine, diesel fuel

• Reinforcing the front side

• Bolster for drop-side semitrailers

• Replacing the pneumatic-brake pipelines with copper pipelines (superstructure-less chassis with threaded fittings of the pneumatic system)