I had an idea! Don't know if it is possible or even practical but I would like to be able to carry more diesel on my long road trips. I am thinking of adding a saddle tank from an F250 to my Ex. I would plumb it so I can just transfer fuel from it to the rear main tank with a switch on the dash. Not sure how the plumbing for the fill would work yet. Just wondering if any other Ex owners have done this. Just seems to be a cool idea. Any thoughts or experience in doing this. Let me know what you think.