Overview Dart top end kits for big block Chevy engines offer a full compliment of performance matched parts that make building your engine simple and easy. These kits were designed to deliver excellent performance at a great price! Includes: Fully assembled cylinder heads. Stamped steel valve covers. Intake manifold, matched to compliment the cylinder heads. Intake gaskets, head gaskets, and exhaust gaskets. Spark plugs. ARP head bolts.