Fred,
It's gonna be a lot easier for you to repair the leaks, if you have a good ID on their location while the engine can still run.
For example, many leaks toward the back (front of car) of the engine are really on the TOP of the engine, like the oil thermostat, or the oil cooler, and only appear to be from the bottom or rear sealing areas.
Try to clean the entire engine, remove the air cleaners, get a lot of light in there run the engine and look everywhere. If it is leaking like you say, it should be possible to isolate, and then you have a hope of fixing it successfully. Imagine your dismay, if after a complete remove/repair/install cycle, you STILL have the same leaks...
