Didn't get that huge oil pan ...
Went with this pan instead, also from a boat motor Mercruiser ..
Reason for this pan was the grooves ...
Matches the valve covers ...
Wasn't a plug & play install, the oil pump pickup tube that the motor came with was hitting the internal casted in baffles of the aluminum pan ..
Tried to buy a new Mercruiser tube, seems that they are gone hadn't been made in 30+ years ..
Went on the hunt for a used one .. After bout 50 calls to boat shops all over the country, had no luck ..
Decided to see if the aftermarket had a tube that would work.
Got one coming, made by Melling ..
Thoughts was to get a new pump from Melling on the same order ..
Took the GM pump, that came on the motor, apart just for a look-see ..
Found it looking like brand new .. Replaced the gasket and back into service it'll go ..
Almost a inch gap ... That Melling tube was to short ..
Ordered the next size up from Melling ...
That one was to long, but with a little bending got it to work okay ...