Utilized primarily for sportsman 2 bbl competition the Iron Eagle platinum cylinder head provides exceptional power in 358 cubic inch circle track engines.  They also offer drag races and street enthusiasts on a budget some serious power with the utmost reliability.  The circle track (CT) option is the 200cc/49 cc platinum castings, machined, CC'd and assembled for use with flat tappet cams, using Manley Sever Duty valves, Isky/PSI springs, and lightweight retainers and locks.