I just saw a 3500 with exactly what you are looking for. Unfortunately he was going down the road next next to me so I wasn't able to ask where he got it.
It looked like a custom job though. It looked like he had regular tubular steps and then mounted under it was a second step that was mounted in a receiver.
It looked like he had the receiver mounted to the frame.
It looked like a custom job though. It looked like he had regular tubular steps and then mounted under it was a second step that was mounted in a receiver.
It looked like he had the receiver mounted to the frame.