Yes, Al they can.

Ryan Johnson just did one from what I am told. I understand he just drilled holes in the bottom of the cam tunnel.

I have one cast iron block that has a large plug in the front that can be taken out. Then go into the suction compartment on the rear and drill hole to allow oil to flow back to the pan.

In the pic the line up front on the left is the feed line for the oiling system. To the right is the suction line for the cam tunnel. It is a long fitting with an O-ring around it. This is necessary to get the fitting where it can be accessed. The O-ring seals the tube to the compartment. The treaded part up top threads into the Bell housing portion of the block to hold it in place.

I can understand why people would like to run one with a single stage wet sump. A lot less lines and a lot cheaper. It is a very simple fix with the belt drive, rear cam plate, and oil pan removed.

Leon