It appears that my timing belt has broken and I'm worried that it could have caused many other problems since the car won't run. Can anyone definitively tell me if my 1999 Isuzu Trooper 3.5L V6 has an interference or non-interference engine? If it's an interference engine, what does that mean? Will I need to replace the entire engine? I was driving at about 50mph when my car stalled and it hasn't started since. Thanks.