Fresh 8445 heads, which I have the flow sheets on, that are complete with a competition 3-angle valve job, Teflon seals, Big 1.77" / 1.50" stainless 1 piece valves, inspected & cleaned, and ported & polished by Precision Porting and Coatings. (www.precisionporting.com) ($1,099 stage 2 heads...