The metal tab that's glued to the windscreen is still there stuck fast, but the plastic Britax mirror that came with the car is broken after 25yrs+ in the Australian sun. When I search for a replacement identifying it as fitment for a '98 Magna/Diamante/Verada, I get no results, and the biggest supplier of Mitsubishi parts in Western Australia say they're out of stock and discontinued.

Ideally, I'd prefer just to replace the mirror with another that will slide straight on to the old metal base plate tab, but the ones I've looked at in the local parts shops all have different dimensions to mine. Is anyone out there aware of one from another manufacturer that shares the same backplate/tab dimensions as the original ones that came with the Diamante/Verada/Magna in 1998? Very few that I can find online actually provide the dimensions of the plate/tab, so it's a bit hard to know without that :-(.