In what would seem like a half-hearted move to rev up the domestic economy in the wake of global slowdown, the Government today said it would spend an additional Rs 20,000 crore in 2008-09 to galvanise rural infrastructure, extend sops worth Rs 1,800 crore to exporters and take a Rs 8,700 crore hit on its tax revenues by cutting the Central value added tax (Cenvat) rate by 4 per cent across the bo