So I ordered the denso 673-6000 from Rock Auto and got them yesterday installed them they all work no bad ones out of the box. Packaging was very nice each coil was individually packed better then the Visteons I've bought that came loose in a box. Rock auto claims Denso is an original equipment supplier and comparing the Denso to an OEM motorcraft they look identical. They are made in USA Got them for $197.35 shipped to my house. I report back if I have any failures.