It's funny, I was just going to post some pictures of the Ramcharger tank that I put in my ex-cab short box. This summer I was thinking about weight distribution in my short box. On the driver side you have a 40 lb battery, I weigh in at just under 200 lb's and if your tank is full there would be another 200 lb's or more right under the driver. I measured the short box and the Ramcharger frames and to my surprise they were the same lenth from the front spring eye to the end of the frame. I removed the Ramcharger rear cross members and had them sand blasted and painted. When I installed the cross members in the short box frame some of the mounting holes were already there and that made it alot easier. I will have to finish running the gas lines in the spring as our snow came early this year. As you can see by the pictures that it fits and looks good. I still have not removed the old tank.