CREATE TABLE table_74550 ("Engine" TEXT, "Horsepower" TEXT, "Torque" TEXT, "Carburetor" TEXT, "Compression Ratio" TEXT, "Bore & Stroke" TEXT, "VIN Code" TEXT)

What are the bore & stroke specifications for an engine with 4-barrel carburetor and VIN code of A?
SELECT "Bore & Stroke" FROM table_74550 WHERE "Carburetor" = '4-barrel' AND "VIN Code" = 'a'
SELECT "Bore & Stroke" FROM "table_74550" WHERE "Carburetor" = '4-barrel' AND "VIN Code" = 'a'