Hopefully by the end of this weekend i'll have mine finished along with a pretty comprehensive "how to". You could build one yourself really easily. The hardest part is cutting the holes in the metal, everything else is pretty much off the shelf. Once i finish this one, I'll consider makin' ya one. I just wanna see what the final cost is to me for all the parts and time, and consider how i'd do it faster a second time around, and if the $ would be worth my time, of which i have very little.
Oh, and on second thought.... if you really just wanna plug it into a sled... you could always just have a sled sitting on top of your stereo without a case. Then all you'd have to do is mount the ethernet plug and AC, and you're done. The RCA's would just stay plugged up.