Nano for India is a 1 lakh car. So they have avoided the safety systems such as ABS, Airbags etc. But for the Europian version, these safety systems are available. This is due to the strict laws in Europe where these safety systems are compulsary. The engine is same for both variants. It is a 3 cylinder, 600cc,MPFI engine. There are some difference is the outer parts too. The headlamps are different, and such like that.
New Tata Nano with EasyShift is available at Rs. 2 lac (Ex-showroom, Delhi), and the final cost depends on the valuation of your car. So, first get the valuation of your car from authorized Tata dealer, so he can give you a final quote for the new car.