Don't know how much room you have in that bumper, I had extra room next to the winch and mounted one there. (I have a Coastal Offroad bumper)
Used a cheap (10 bucks) washer bottle off Amazon and used a step bit to make holes for the pumps, since it was so close to the original location I was able to reroute hoses and wires without any modifications.
Amazon.com: Dorman 603-001 Coolant Reservoir Bottle: Automotive
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2007 SR5 4WD Nautical Blue --
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