My Cummins 528... Crap springs retainers, locks. Valve guides so sloppily oversized that three exhaust valves were bent. Deck surface looks like it was done with a file. Not honed with torque plates and oversize to boot. Above mentioned silicone issues, no windage tray installed and rod bearings chamfered for radius clearance with what looked like a stone axe! Please tear that Hemi core down, it is not worth taking a chance!