For insulation could you hang a second layer of metal off of the cut out area with an air gap between it and the tank? Sort of like the heat shields bolted to the underside of the floor?
What will the cells be made of, steel or aluminum? Any ideas on the dimensions of a tank in the 25 gal range. Fwiw, I have a 1" body lift if the room on top helps.
If you can, shoot me a ballpark price so I can start planning. $$
Just going by some online dimensions, to get 25 gallon cell in there and allow for exhaust is gona have to hang down quite a long ways.
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Scrap the shield Kert!