Bought an '08 350 because I thought I was getting a one ton rear differential/axle and the appropriate front diff. also. Some on-line searching reveals that I likely have a Dana 60 diff. which is the same one used in a 250. A Dana 80 is optional and I think is used only with dual rear wheels. Have been told that the frame is the same also. Then all I have is a 250 with stiffer springs? This is a big disappointment. Anyone know what (if anything) is different on a 350? Is the transmission the same as a 250? Thanks for any help. Dave.