I beleive the 97 3.0 12 valve has 140hp. The duratec has more hp and tq but im not sure what the numbers are. Check out the tranny really well. Take it through all the gears and make sure the fluid is reddish in color. These trannies are not known for their durability. Take it on the freeway and check for shudder and good downshifts. Also check the heat. The core has a tendancy to clog. If you do go with the warranty, make sure you sign a warranty contract, and know exactly what it includes. If that checks out and the warranty is included, it sounds like a pretty good deal. good luck