If you got the info from someone else, like a dealer, I would still call Wadia to confirm they don't have it. If you can't get it, you may have a couple of options. I'm pretty sure that all of the 860's have digital inputs. That would allow you to use the dac in your 860 and just use something else for a transport. Even if its something cheap. It may hold you over until you can figure out what you want to do.
Another possible option would be to upgrade your 860. The wadia 861SE uses a different transport. You may be able to get that one. You would have to ask Wadia. I do know that you can upgrade an 860 to the 861, and then upgrade the 861 to the 861SE. I don't know if you can use the SE transport in an 860 or have to turn it into an 861 first.
Another possible option would be to upgrade your 860. The wadia 861SE uses a different transport. You may be able to get that one. You would have to ask Wadia. I do know that you can upgrade an 860 to the 861, and then upgrade the 861 to the 861SE. I don't know if you can use the SE transport in an 860 or have to turn it into an 861 first.