Completley new head. This head will NOT be outrun by anyting cast iron, and will run with the aluminum heads. These heads have won 300 feature wins across the U.S. the last 10 years in open comp. races and have won many against the aluminum ARCA head... Comes with matching intake. Finished setup can be done with solid or solid roller cam. This was my personal cyl. head but im not using it and decided to sell it. $2500.00 ,J.D. Laramee/ Performance Porting Service