hi jimmy,
i am not sure when they started adding the pumps. it maybe after yours was made.
i have two pumps. one clearly visable on the frame rail next to the engine on the drivers side and one behind the front end cap above the headlights on the passenger side.
i also replaced the 20 gallon coolant and electric heat raritan. they are expensive, like over 700 bucks if i remember right. so if you can find one on ebay like forest did (and one was on right after i bought mine) it is a good thing.
the coolant heat ones are awesome. i can drive for 30 minutes and have hot water.
in fact, if you check this site, you will see i put a tempering valve in to keep my grandkids from getting hot water burns.
but, if you dont want it, a 110v one would be a ton cheaper
give me a call if you want to talk about it
tom
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