Asian Development Bank Economist Abhijit Sen Gupta today said that India can achieve over 8 per cent growth rate if it takes steps to revive investments and make exports competitive. He also said that the efforts will also have to be made to streamline agriculture marketing and improve supply chain. "Right now, the investment and exports drivers are really not firing... once those two engines fire up India can sustainably grow at 8 per cent," Sen Gupta told PTI.