Okay this is directly out of the book page 40:
" Windage Tray"
The windage tray sold by Mopar was designed for a crankshaft
with a 3.310" stock stroke (stock 318 and 340 stroke). Many
customers use the windage tray with the 3.580" 360 stroke.
The windage tray fits, but it does not work as well with the
longer 360 stroke. The crankcase pressure is increased when
the windage tray is used with the 360-stroke crankshaft. The
windage tray P4529790 is not recommended with a 360-stroke crank.
<end>
Moroso does not list a windage tray for a small block mopar.
I went to an old Herb Mc Candless article (realy old 1999) he used
Milodon trays which are some what adjustable. I know what the
E58 is but no clue if it came with a tray. Rumble also said he thought
they came with a tray from the factory. Maybe the problem is at high
rpm, the article does not realy tell us that though.