My 03 Mastiff had the Headwinds headlamp but it was the "Tradewind" brand. It's Headwinds less expensive shell.
My 05 has a generic shell. I think BDM started contracting them out to whoever could make them. I think you will notice that the 05 has the hood on top unlike your 03 version.
Lots of stuff out there for chrome but in my honest opinion using buffing compounds and other swirl removers just lessons the shine on the headlamp.
Later,
Ray