I've got the engine/trans mounted a bit higher than most with two 3/8" spacers on each side of the Expo transmission mount.
Using "Strada Shop" engine plates but spaced up enough to cancel out the drop in the right sde.
Have plenty of room for the rack.
Using an Expo steel oil pan with the lower front edge moved back to the drain plug to give install clearance with the transmission installed. Used a Ford Racing parts rear sump oil pickup.
All the mounting plate designs I've seen have a flat plate on left and a drop plate on right. Think a flat on the right and a 3/8" lift on left is better option.
Shot of the transmission mount spacers
Modified oil pan
Drawings for flat plate engine mounts