I was wrong when I posted yesterday the 6VE1 was an Interference engine. I've checked with about a dozen engine publications online and they all agree concur it is a NON INTERFERENCE engine (most older Isuzu's were interference), except this site: http://autorepair.about.com/cs/doity...ming_belt3.htm
There have been several owners here who have had the belt fail and NOT had catastrophic engine failure. I was in no hurry to change mine for that very reason that if it failed, at least the valves and pistons wouldn't meet - BUT, a broken belt could sure do some damage.