ARP SBF Head Stud Kit 12pt. Cylinder Head Stud Kit – 12 Point Nuts – Chromoly – Black Oxide – Man O’War – Small Block Ford – Kit. Fits Manowar iron & aluminum blocks. Cylinder Head Fastener Kits. QUICK Response Customer Service. Processing begins as soon as an order has been placed, therefore we cannot change, cancel or modify orders once they have been confirmed. We love International customers!!