4.00" cranks and windage trays...??

you'll need to grind the tray to clear the rods and need 12 nuts to double nut the tray to the right height then another 4 nuts to hold it there.
and yeah no one 'needs' a windage tray.

if you run a deep sump a 1qt low or so what would work better maybe is a crank scraper.

if you run stock depth then hell yeah the tray will help, so would a scraper, but the tray would keep the windage from draging oil up and all over.