if the odometer works, that's kinda low for a chain break. i'm used to seeing them break at about 120-125k miles. yours was 99-105k miles. and i've not seen an engine destroyed like that, either. usually it's just 4 bent valves. but, that's why i like to pull covers on all v8s i see for the first time and cars i know, every oil change after 100k miles. thanks, chuck.