GREAT thread, lot's of info to digest for sure.
Copart, a major seller of insurance (and other) damaged vehicles. Bargains to be had.
This link shows current listings with auction close dates of trucks that have LS engines (many vehicles shown aren't up for auction yet).
One thing to remember (and learn about), third parties are available to help with purchase if one doesn't have a dealers license or friend that does.
RonR