The running board flares are aftermarket.
They never came from the factory like that.
Conversion companies installed them.
Pretty sure they were packages chosen by the dealer and done at conversion local companies.
A friends brother had them on his Ram pick-up.
Even the "Daytona" Ram trucks were done by an outside conversion company. I believe it was Roush Industries that did them.
On them, the ground effects, rear wing, etc was all done after the trucks left the assembly plant. (I worked in a Ram assembly plant).