First off, I'm not an expert with the SB. I'm putting together a Duster 340 to run stock and the man I got the engine from and his builder (the man to go to on the east coast with a LOT of dyno time) said use the windage tray and stock pump with the Magnum rear sump pan. I ran the pickup (3/4pipe, small blocks have a tiny pipe) straight off the pump cover down into the sump. I also machined the rear cap to accept the magnum pan and one piece gasket.
The 360 tray is different than the 340, got one on my 360-380.