Table: torino_specs
Columns: engine
horsepower
torque
carburetor
compression_ratio
bore_stroke
vin_code

Question: What are the bore & stroke specifications for an engine with 4-barrel carburetor and VIN code of A?
SQL: SELECT "bore_stroke" FROM torino_specs WHERE "carburetor" = '4-barrel' AND "vin_code" = 'a'