I have been a lurker around here for a while. I have subscribed to almost all of the home built trailer threads. Here is what I want to buld. I drive a 2000 4x4 excursion. I know it has the power to tow almost anything. What I want to build is a Trailer similar to some of the box trailers shown on her but I want to up size it to the with of an excursion. I'm Thinking I want the bed to be at least 6' wide and 10' long. Maybe a 5000 lbs. axle, colapsabe tounge. Any ideas?