Kiwi WRC star set to resume racing after mechanical issues forced temporarily withdrawal.
In a boost for the smaller teams, engines will be cheaper and more standardised.
Lewis Hamilton boosted his morale with the fastest lap in Russian Grand Prix practice.
Not yet over his jet-lag having won the Rally of Argentina, Hayden Paddon is back into his work.
Australian F1 driver to handle practice run at Sochi with a new cockpit protection device.