In my Moroso older Ultimate 2 pan it came with a diamond stripper and that's what I still use........and its easy to imagine why it would work , better than a tray. The Ultimate 2 pan has a full kickout and seriously altered sump......uses tubes through sump to pan rail.
Funny thing is , when I was talking to a "good guy" at Moroso 2 weeks ago , he wanted to sell me a newer pan , one that uses a TRAY........the pan looked much simpler than the pan I have. He told me the newer pan was worth 15 HP..........I didn't buy it . The pan he suggested is below. This pan looks much cheaper to produce than what I have now ( Ultimate 2).