CREATE TABLE table_62863 ("Model" TEXT, "Years" TEXT, "Engine" TEXT, "Displacement" TEXT, "Power" TEXT, "Fuel system" TEXT)

What is the displacement when the fuel system is carburettor, and a power of ps (kw; hp), and also has a model of 2000?
SELECT "Displacement" FROM table_62863 WHERE "Fuel system" = 'carburettor' AND "Power" = 'ps (kw; hp)' AND "Model" = '2000'
SELECT "Displacement" FROM "table_62863" WHERE "Fuel system" = 'carburettor' AND "Model" = '2000' AND "Power" = 'ps (kw; hp)'