Rear sway bar instead of front

Did any 3rd gens come with a rear sway bar? My 07 mega only has one in the front, and I can't stand it on the single lane heavey roads around here. I feel like a bobble head driving it. It is a 3500 SRW.
My 98 on the other hand had the camper package or whatever it was called with both sway bars. I have long removed the front and it doesn't roll on off/on ramps or anything, handles the narrow windy roads around here better IMHO.

Is aftermarket the only way to look for one?

no rear sway was ever offered from the factory for a 3rd gen to my knowledge

aftermarket it is