What lights was 4WC using in 2013, and were they direct wired or did they have a quick connect?
I think they switched to Grote 63991 wide floods (63981 are narrow, and I think more appropriate) at some point. The lumen output is higher than most low-beam headlights, they are/were made in the US, and are extremely high quality (with the associated cost). Note that the mount pattern for the swivel base on the Grotes is the same as the old halogen tractor lights, but since those were hard-wired, one needs to splice in the new pigtail connectors.
It's probably also a good idea to run a new ground wire back into a wiring harness, as the frame ground that 4WC uses is pretty finicky, and potentially high resistance (just a self tapping screw into the frame).
With the new swivel mounts and lights, you'll also need some butyl putty and outdoor silicone to make a watertight seal back to the camper siding.