You can get the pump rub upgrade for $50. I believe IdahoRob sells them and they are very simple to install once you have the case apart, its a drop in piece basically.
Its not too hard at all, might take you 45 min or so to take it off the truck. Taking the case apart just involves taking all of the bolts out that hold the two halves together, you'll also need some snap ring pliers to completely separate them from there which can be the biggest pain in the butt of the whole project.
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