I just finished adding 3D printed plows to my USA F3's. They were made by Trainwreck-Designs. He has a website if anyone is interested. A couple years ago I was lucky enough to get stainless grilles for them. I don't believe they are available at this time. Most F3's had the chicken wire but later units were fitted with the stainless grilles which became standard on the F7's. I always hated the chicken wire look. I did make some other changes. which include new headlight lenses and reflectors, ladder hangers and a five chime horn on one of the units. The mars light is programed through a Airwire G3 decoder. The headlights are warm white leds. Classification lights are bright white leds, also operated from the G3 decoder. Here are a few photos.