Seems like its got pretty low hp and torque #s for the engine size and there are some things to watch out for.
http://www.expertdiesel.com/82_detroit.htm
http://www.ehow.com/list_7557890_82-...fications.html
Weight is listed around 1100lbs. There was just a post a few days ago where they were talking weights of big blocks vs. cummins. IIRC, the 5.9 cummins was pretty close in weight to the DD. Search for that thread, some good info there