Deep sump oil pan
the hard part will be extending the stock pick up. im not sure if you can just buy a pick up that is the correct length right off the shelf. they might be a start though. i would cut the bottom off the sump. buy a new pick up for a deep sump pan and mock it up. measure how much you need to add to the pan to make the sump line up correctly and then build the pan to fit the pick up. what ever the capacity ends up at is what it is.