Probably going to have to have one made specifically for it, unless you can get really lucky with finding one on eBay, Craigslist or something similar. Though, I don't imagine that's likely to happen. You could also check with your local GW dealer and see what they have to say, as the 208 Adventure was built up until a couple of years ago. Maybe you'll get lucky and they've got some new old stock items laying around somewhere.