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Done with a fill tube on the outside of the console and properly vented, you could do a clean installation, that makes filling very easy. Keep in mind, thats a relatively confined space that could hold vapors in the same area where a spark is possible from the ignition or fuse blocks. I might add an extra fresh air vent facing forward to ensure there was ventilation if you feel it's not already open enough. Then again, you had a tank in there already so it's likely safe. I personally always try to error on the side of caution.