I just saw a set of them in the Camping World catalog. I don't remember if the Dakota was listed, but they had many Dodge trucks on the list.
i was checking into it because my tow vehicle is a Dodge also, and even though the regular mirrors are wide enough,, i was considering getting a pair to slip on whelk maneuvering by myself. The van's mirrors are great for the freeway, but just a smidgeon too short for maneuvering.
Here is the link, by the way: