Buddy,
I'll give you my standard "rant" on filter location in a dry sump system. Almost everyone wants to put the filter on the outlet of the pressure section and it has been done for years but the best place for a filter is on the scavenger lines before the oil tank. Any engine parts or contamination that goes through the engine will go through the scavenger pumps and into the oil tank. Now gear pumps,which are the type of pumps that most dry sump systems use, are pretty dirt tolerate especially at low pressure, so if they ingest some smegma from the engine the scavenger pumps many have some scoring between the gears and the pump housings which will not adversely affect their function as they are low pressure but if this happens on the high pressure pump it will become less efficient and potentially have a more difficult time maintaining oil pressure. Putting the filter in the oil return lines to the tank will keep the tank clean and also prevent contamination from going to the high pressure pump. I think that most NASCAR set ups use both filters in the return lines and a smaller filter in the pressure line, but if you are going to only use one filter then put it in the return line to the tank. Use a good filter, that is one that is rated at least 10 microns and make it big, this keeps the pressure drop down and also it will hold more contamination, although if you have any contamination this is probably a sign of engine problems.
Another note regarding filtration, you would be surprise on the amount of contamination in a quart of "new" oil, some place I have some microscope photos of the junk that came out of a "new" quart of Pennsoil, you would not want this stuff in your engine. Obviously the best thing you could do is to filter the oil as you put it into the tank, most of us don't have that option so the next best thing is to make sure you don't try to drain the very last drop of oil from each quart as the junk settles to the bottom of the bottle and is usually in that last few drops.
Rex
Rex