I went this route some 20 years ago. Two tips:
- the original chrome frames fit also on the european style light fixtures, you only have to grind (dremel) off a notch or two on the inside
- I removed the overriders and just added antenna caps (chromed plastic 'plugs' that fit inside and cover the holes left by the removed overriders) and it's not bothered me at all ever since - so no filling in, re-chroming, which will be very expensive these days.