I got some from someone who advertised in the back of the CVA newsletter a while ago. I think you can find the same guy on ebay too; they fit/look fine.
One thing I did you may want to consider; I used spray adhesive to attach a sheet magnet to the back of the padding. That way I can easily remove it when just driving it and keep them clean/nice for car shows, etc. Also, when time comes to replace them, wont have to scrape off glue, etc.
They have stayed on very securely for long trips, etc; never had a problem with them.
Ron GroveWauconda, IL