I posted about changing my 5.75 inch round headlights. See link below. From photos of the Aria i am guessing your motorhome has smaller sized headlights. 4.5-4.75 inch to 90 mm sizes are available in the after market.
I am a fan of JW Speaker because they are made in USA to full Federal (FMVSS) legal specifications and that means they work for driver and won't blind on coming traffic. Plus, and this a huge plus......they are excellent lights. Truck Lite and perhaps Peterson makes headlight units. These are not LED bulbs but a total unit that is designed to focus the LED light properly for drive and on-coming traffic. Good luck in your search.
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