Thinking Of Buying 1998 SLS

[cadillacatera1997]

Hey all,
As my screen name suggests, I currently own a 1997 Catera. The thing is that the Catera has a blown head gasket and or cracked block so therefore I am in the market for a new used car. What I have come accross is a 1998 Cadillac Seville SLS with 68,000 miles for $11,800. It has chrome wheels, heated seats all the way around, and of course the Bose stereo, and it also has a 1 year 14,000 mile warranty. I am going to look and take the car for a test drive today. Is there anything I should look and or feel for when viewing and driving the car? Are there any common problems that will easlily present themselves? What do you guys think of the price of the car, is it fair, good, high, etc? Also, does anyone know the 0-60 and quarter mile times of the SLS and the wattage of the Bose stereo? All I've been able to find so far is the 0-60 and the quarter mile times for the STS, which if I am not mistaken has 25 more hp and 5ft/lb less torque. Has anyone run anything less than premium in their SLS and what sort of gas mileage should I expect?
Thanks A Lot,
Andy