I'm building up a 393 Cleveland. I want to use a high volume oil pump. It's going to be revved pretty high and hard cornering on occasion.
Which oil pan do you guys suggest?

 

a well baffled one
I used a High Energy sump with a diamond arrangement for baffles, specifically designed for open track racing.

Moroso and others make something similar, but just make sure you get the right application not a drag sump that just stops the oil from going towards the back

are you going to use an accumulator as well?

 

Yeah, definately get a road racing pan with good internal baffles and high capacity. Dry sump would be best for extreme cornering applications, but that's expensive.