1 NEW Mopar Performance W2 "Econo" BARE cylinder head. 59 degree head, 70cc chamber with cast-in pedestals designed for rocker arm shaft packages. This cylinder head is designed to use STOCK LENGTH VALVES. This cylinder head has had no additional machine work performed. I would recommend resurfacing the head prior to using. Mopar part number P4529994. Casting number 3870810E. If you have been looking for a match for an orphaned set, it's your lucky day! No longer available new from Mopar Performance.