Agreed 100%. It just goes to show, when you buy one of these cars, really beware if the original intake manifold gaskets have not been replaced. They are going to fail someday and that cost has to be factored into what the given car is worth, 3.1 or 3.4. With the 3.4, the big 3 factors are: Intake Manifold Gaskets, Timing Belt, Alternator. If these have been replaced, proceed. If not, proceed with caution, big repair bills await you.
I'm on my 5th Alternator with my 3.4, with both Intake Manifold Gaskets just being freshly replaced. My Timing Belt was replaced in 1996. It's hanging in there (the mechanic advises it's in great shape) but I inspect it 2x a month. I need to get that done someday fairly soon.