Just go for a classic version of the top line. And drill holes on mudguards and bolt them with a washer. Like i've done on my audax bike. If your mudguards are wide you can even bolt it horizontally with a small bracket.
Looks nice I've done the same on my PDW. What mudguard are you using? It's the size of mudguard which has limited me to 23mm on PDW. Did have 25mm but they rub a little when grinding up the hill. Would like to go back to 25mm or 28mm as 23mm seems to make the bike vibrant more.
Does anyone know how this light should look on a Velo Orange Mudguard? Can't find a manual or how it would fit on.