Oil Leak

spray down the engine and undercarraige with some purple power
where you think the enfgine may be leaking spray some aerosol foot powder
the leak will turn the area black from white
also put a piece of cardboard under the front of the car where you park
when you move the car you will see where the drips are and can help pinpoint it

If it is the rear main seal on these cars, they are notorious for leaking, On your 460, it could be either a one or two piece.
No one can answer if you should fix it without knowing where the leak is from other than to say in general yes you should repair it