Mitsubishi 3000GT Timing Belt Replace/Remove

I Have Not Changed My Timing Belt On My 1997 3000gt Yet. What Happens If The Timing Belt Goes? It Has 85,000 Original Miles After 18 Years....

Hi, My Gt Just Died While Driving Replaced The Crank Sensor But Still Wont Start Is It Possible The Camshaft Sensor Should Be Next Or...