The mounting holes are most likely standard for the Bullseye lights. The thing that will require some work is that these lights tend to be potted plastic on the base and you may have to grind a channel for the positive wire across the base. Airstream did not center the hole for the wire on the older trailers, I can't say for the newer ones.
Note these are not LED lights. You can get LEDs for about $7.00 elsewhere. For the cost difference tine you add the bulbs is it worth it?
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles