Just about all of the performance engines I have built over the years I have installed windage trays. To me they are far more important in boat than in a road toy. In my drag cars I had them for the same reasons that everyone else had them, under hard acceleration the oil even with baffles gets splashed up into the crank which turns the oil into foam. Some say it causes some power lose, I aqm not sure if that holds true. Foamed oil does a lousy job of maintaining pressure, just think about the dance your oil does in a chop. You spend many dollars to get what you can speed wise, but most builds do not seem to include trays. They are damn cheap insurance!!!!!!!