I downloaded both to make sure something wasn?t wrong with just one, but both of these stock years should be 6L LS2 motors. The description says that as well in the repository. Yet when I open each file, the engine displacements are 5.7L. I downloaded a 2006 Corvette, and it is correct. I probably wouldn?t have noticed except I was trying to compare a GTO LS2 to a Corvette originally (btw, I was surprised how much was different like fuel injector flow...why is that?). Anyway, I just thought I?d ask if I?m missing something as these look wrong.