When my stock battery for the Mystique went 3 years ago I got a used battery from the wreckers. It was from a 96 too. It is still running. I figure it is bound to die soon given its age but for the last 2 winters it would take a lot to crank over but it would get the job done none the less. It just doesn't want to die.

Green 96 mystique gs 4cyl mtx 16.9 in the 1/4 mile @102500 miles 95SE in Midnight Red MTX MSDS headers and y-pipe SVT exhaust SVT UIM Optimized se TB. Full pre 98 SVT body kit 15.741 @ 87.73mph :)