Gary,
I suggest you go to a heavy duty truck dealer parts department that has a Chicago-Rawhide (CR) catalog. I doubt the catalog will have a listing for a Dodge truck; however, if you measure your spindle size with a micrometer they should be able to find a Speedi-Sleeve that will fit your spindle by looking under the generic applications. Speedi-Sleeves are commonly used on medium and heavy duty truck front axle spindles since they, like your truck, are driven for hundreds of thousands of miles.
Bill