$500 obo Gt40 heads ( not gt40p ) from an early 1997 explorer refreshed by Godwin singer. The heads have been dipped, magnafluxed, surfaced, and painted black. The springs have been shot peened. The heads also have new valve seats, seals, guides and a three angle valve job. The heads have not been used since rebuild. [ATTACH=CONFIG]197025[/ATTACH]