Nobody offers one off the shelf. But check with board member Truckseats. He has helped a few guys on the board.
Your other option is to buy the fabric from SMS Auto fabric
www.smsautofabrics.com/ and take it to an upholsterer of your choice.
Either way, prepare to part with a few bucks. They're not cheap. I have a 72 Highlander and am going to get one sooner or later.
Good luck.