Have a chance to buy a 97 Caddy with 150K, pretty sure its the DeVille, not SeVille. Has the Northstar V8. Hasn't been driven since before last winter, been waiting for the For Sale sign. Body & interior are in good shape. Handles fine, good tires, brakes feel fantastic. AC doesn't work, and the SES light is on. Engine has a dead spot on acceleration, but once she gets going, hold on. I have two friends that have owned several of these. All were well over 200K. I can buy for much less than KBB Private Party, Fair Condition. Any thoughts, or things to check over?