Art: If the depth is similar you may be able to use your current pickup tube. Clearance between the floor of the pan and the pickup should be about 3/8". You may need to weld a bung to the pan to allow for the
oil temp sending unit, the original material may not be thick enough without increasing it with a bung.
Most of the additional capacity is gained by the additional width, you'll just need to compare dimensions between the two. The Milodon pan has gates and baffles where the other may not.
Rick