That's all horse **** geared towards getting a higher price for something. It's been pretty much proven crap through research and some common sense. It's common sense you don't want the lowest or highest number, because toward the beginning they were still working everything out with the new mold and toward the end they were at the end of their life span. An engine in the middle was generally the best for lack of core shift. ......but it's all splittin hairs anyway, because if the block passed inspection, it's not much different than any of the rest. I'd tell um to stick their core reversion bullshit up their ***. Sideways. With no lube.
