[Brian in Tucson]

My factory rebuilt replacement engine had the 12 point fasteners, and I have that HF 12 point inside out torque set--very nice. When I took the old engine out, I saved as many of the 6 point fasteners as I could, they are easier in tight places. I don't know why they do the different fasteners, could be it's what they have on hand at the time, or as a means to differentiate years and models of engine builds.