I have one question. The length of the frame is going to allow a lot of flexing. This is going to create a lot of misalignment between the transmission and differential. How are you going to compensate for that?
The day after I got a rolling chassis put together, I noticed how much the frame flexed! It was pretty bad, but I knew that once I put the drive-train in, it would be much better. I figured that the drive tube, and frame rails would create a "triangle" which would be very strong. Even though that the engine is not bolted down at all yet, I can tell that it has become much stronger. Also, I am going to have to add more to the frame for the dump bed, and that will make it much stronger as well.