This is a really nice primary (rear) carb for  a 1957-61 corvette or chevy. Look at the pictures its  in great condition and ALL numbers match. The top is a 1299 and choke cap is correct as well. The body is an 049 and the condition is excellent, the base is a 1387 and never had a vacuum tap in the front. This is a nice correct carb for a dual quad-2x4 set. Any questions please contact me