The center is tucked up there for a reason. It keeps oil in the sump!
You see the depth of rear section of a small block Chrysler pan is only to clear the oil pump. And you can see from other posts, when you put a taller than stock oil pump it will rub stock pan.
Well, the lower the rear section the shorter the rear wall of the sump is. Think a short dam. And short dams spill over. We don't want oil to spill out of the sump. We want max performance.
