I was talking to Milodon yesterday on something else and I mentioned the 32255 tray...it, and most others, are out of stock due to supply shortages on the screen material. China strikes again...
As for the dyno oil pan/tray discussion, the point in you can see gains on a dyno that disappear when you actually apply the 'trick' to a running, driving car. You can also see gains on a dyno that can't be applied at all to a driving vehicle. A good example of this is headers that pick up 15HP but won't fit any chassis.
