Mods
required to oil pan if using windage tray option:
1.
Oil pan flange near the filter needs to be flattened only if you are
installing the pan with the windage tray option.
2.
The lip near the flywheel needs to be trimmed as it will hit the tranny
dust cover. This is due to additional thickness of the tray and gaskets,
which moves the lip into the dust cover. You could remove some material
from the dust cover instead of trimming the oil pan.