I have a friend that has access to wholesale auto auctions. They said they could help me in getting a D60 for my rig. Since they are not local, i cannot be at the auction. i have to give them the information on what to search for. What brand(s), model(s), year(s) of vehicles should I tell him to look out for in order to get the best straight swap? I am guessing the best bet is some year of K30, but which? What about Dodges? Second question... Besides locker prices (welding costs the same) and the issue of spring perches, what should I consider when deciding between a 14BFF and a D60 for the rear?