I have one that is a custom fit from either Wolf or Covercraft that works well when I use it (haven't in awhile since I'm now able to park it inside).

It even has pockets for the mirrors, but I'd usually take the antenna off so it wouldn't get bent over time. I'd usually put it on then tie it under the bottom to keep in on tight so it wouldn't move around if it was windy to prevent abrasions in the paint.

I'd say check with any of the bigger name car cover manufacturers and they might still be available, even if one has to be made at the time. Might be an item for a bulk buy if the manufacturer would offer a deal for running off a few new ones at the same time for a group of VX owners.

There were usually a few different models to choose from for each vehicle depending on whether it was just to keep dust off the paint if parked inside, or a multi-layer waterproof model to keep out rain, snow, etc, if being used on a vehicle that was always parked outside.