Thats how I feel about it. Even before the big inch book came out. We all know factory units are fine to a certain point. Then companys like Mildon, Moroso etc... have done alot more homework in the field of racing.The MP trays work fine on moderate engiens, but a high winding 360 would benefit more from a scraper and/or deep sump pan then the MP tray.
Now just where the stock tray becomes ineffective is a mystery to me.