Obviously parts for these are no longer available which leaves you with 2 options.
1. Look for broken but cosmetically sound units and replace the cabinets - not likely to happen to be honest as most will have scratches of one degree or another.
2. Find a local sheet metal fabrication company and get them to cut you some replacement thin brushed alu' sheet. Easy enough to replace as they are only stuck on with double sided adhesive tape. It is unlikely that they will be able to match the original finish though so you will need to weigh up the pro's & con's but this is likely to be your best option.
Chris.
The use of metaphors should be avoided like the plague. They're like a red rag to a bull to me.