To me it looks like the dipstick boss (on the RH front of the block) is cast in but there's no hole - it's solid. Are you looking somewhere else?
The 2, 3, 4 main webs are definitely thick and are relief cut for the main throws. Pan rail is solid in between the middle main webs.
I'm not worried about the build, just trying to understand some oddball details. What was the deal with the Kasper block?
