"This was achieved by introducing a new version 6.2-liter supercharged Hemi, with 62% of the content changed from the original Hellcat Hemi — including a new block, crankshaft, connecting rods, pistons, and supercharger assembly."

This is from the article... Looks like a redesigned shortblock, not just rods/pistons, cam etc. To me this means block, crank and so on.