I second whoever said the A/C accumulator is the source of your leak. On that generation, they made the accumulator out of aluminum then covered it with a foam-lined hard plastic shroud. I assume to keep road grime off it, since it's mounted low on the passenger front frame rail. Unfortunately, accumulators naturally sweat during operation, and this foam lined shell would hold that moisture and rot out the accumulator from the bottom.
I ran in to this exact issue with my Marauder. The replacement units are made of steel, and don't require the shroud. Cheap part and an easy fix.
I also vote keep it. I sold my Marauder at 230k miles and it was just like your car: flawless. No leaks, no rattles, everything worked perfectly. The only reason I sold it was the fuel mileage and my inability to keep a car for more than 2 years out of pure boredom.