Sorry guys, that set has been gutted.
I have this same set - all original. There's no way you could stick that DTV box inside the cabinet with the original chassis.
That's also not the original back with a CRT cap so a 10BP4 wouldn't fit. That round "plug" shouldn't be there either. Channel knob is wrong too.
Here's what the back and front should look like. Here's a short video showing it in action:
http://www.youtube.com/watch?v=NqlkbpCaPoA