I’m installing a 20 gallon water tank between the drivers side frame rail and the driveshaft on 2011 F-250. My plan is to have a piece of 10gauge steel bent into a U with an ID of 37 1/2”. I’m planning on sliding that up and bolting it to each frame rail and then installing the tank into the bottom of the U. I’m planning to wrap the tank in an exhaust wrap heat shielding to protect it from the muffler and whatever pesticides and herbicides they spray under the truck. I’m not sure though if putting a rock guard around the muffler is ok. I’m worried about heat build up from the air not being able to circulate and causing failure in either the muffler or the x-fer case. Is this a real concern or am I over thinking it? I’m thinking I could drill some holes into it or even cut out a section if needed.