I could tell the differences Tom, Don't worry about it. Probably a disgruntled former employee from one of the "manufacturer's" many companies.
Yours is tremendously different than the Milodon I bought, wish I'da know you did those first, really. The windage tray, everything different. Even the ribs, but I'm not here to address that issue, that's all yours.
We'll see if I have the Oil pressure problem at high RPM that Electrowoman had real quick with my Milodon. I suspect more a problem with a leaking pump/pickup or gasket/connection between them than the oil pan, IMHO, but whatever.
I can attest fit was a major concern, but since I have a JE pump on this one that is set back a tad from where the JC I have in the Saguaro is may prove to be a bit more challenging, I got it in there and nowhere near the pump or intake housing.
Might take feeler guages to measure how far away it is from the bottom of the hull, however

, but clears it.
Ray