Replacing fuel tank
When I bought my motor home,it was raining. I didn't want to crawl around underneath of it "inspecting" everything. It looked so good on top.
A few day later, after I got it home, I was crawling around underneath it trying to see what I could do to add an "extend-a-stay" to the propane system. There is some rust on the frame, the propane line was really rusty (I replaced it and added my own version of extend-a-stay). The fuel tank is really rusty and appears to be "weeping" a little at one of the seams. There is never a wet spot on the ground under it, even after sitting for couple of months.
My question is, does anyone know how much trouble or expensive it is to replace the fuel tank? It's a 90 gallon diesel tanks on/in a 2007 Fleetwood Bounder 38N. Freightliner chassis. I'd like to put in a larger tank if possible. There's quite a bit of room ahead, and behind it in the frame.