The mufflers are in the same place as they were on the inside of the rails, just 2 inches closer to the floor. There is still quite a bit of space above the mufflers, because they are mounted to the cab substructure. The floor doesn't get hot on the inside, even after driving 40 minutes- I have a lot of insulation, though. There is no noise from the mufflers being under the outside of the cab, either. Actually, it was louder before, when my mufflers(skidplates) had holes worn in them. Now, the only noise is coming from where it is supposed to- the exhaust tips.
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