I did mine from the top. Put a floor jack with a piece of wood on it under the engine and jack it up slightly. Remove the motor mount on top of the engine to get to the belt easier. Replaced the tensioner($56 at a NAPA store), the idler pully($28 at Autozone), the belt ($28 at Autozone). You need a T40 TORX bit on the tensioner. A 13mm and I think a 19mm deep socket for the motor mount. Getting the new belt on is tough UNLESS you put it on BEFORE putting the idler pulley on. The idler pulley goes on EASILY if you just push the belt down while putting it on.
