Last time I spoke with Gary, I think Gary working (little mod) on the RCA board to make more friendly for DIY.
Now you can place the board any where you pleased and any chassis as you wanted.

Cardas RCA jacks and Neutrik connectors will go with the chassis kit.
He working to update the instruction with the update RCA board.
Everything should be ready in 2 - 3 weeks
I will keep you posted soon I can find out more info.