My 5.9 Magnum engines didn’t have one, my 79 lil red 360 didn’t have one. I have the last year (92) LA that I haven’t taken the pan off yet so don’t know on that one. I read an article from Chrysler (a long time ago) before they started using the tray they did a vidio of the spinning crank at speed it showed what looked like a wool blanket wound around the crank, the oil in suspension. After the tray was installed a lot of the oil was removed, then dyno test where made to prove its effectiveness. 1960 tech but they where smart engineers.
