For this, we would suggest you walk into the nearest authorized service centre as they will be the better person to assist you. You can click on the following link to see the details of the nearest service centre and selecting your city accordingly - Service Centre.
The Innova Crysta is available only with the 7-seater and two engine options in the BS6 era: 2.7-litre petrol and 2.4-litre diesel. Both are offered with a 5-speed manual gearbox with the option of a 6-speed automatic transmission too. Toyota is offering the Innova Crysta Leadership Edition with the same 2.4-litre diesel unit. It is mated to a 5-speed manual gearbox.