Oil Pan
Several versions of the production oil pan are available. The 273, 318, and 340 all use the same basic oil pan. The 360 pan is unique because the end radius is smaller on the 360 pan. They are not interchangeable. Magnum pans are similar (5.2L is unique from 5.9L), but the sump locations based on the vehicle tend to be unique.
The oil pan has a sump that must be compatible with the engine compartment and vehicle chassis. The sump can be in the middle, at the rear (shown), or at the front, which is rare. Another component of an oil pan is the end seal radius. The 273, 318, and 340 share one set of radii and the 360 radius is smaller. These pans are not interchangeable.