everyone failed to mention the dreaded lower intake manifold gasket job. the 3.1 is famous for springing a leak there . i owned several 3.1,s and seen it alot. the subject is entirely discussed in the lumina section of a/f. it,s about a $650. job at the average shop down south. sounds like a good used engine and a shady tree mechanic is the way for you to go. now for personal safety = i live in new orleans. do not drive nice cars in the city if you want to live. nice cars are like a big sign for car jackers.