[Steve Davis]

The resistor in the bakelite block is a hank of wire, it is as good as you can get, if in good condition, I would just reinstall it.  Since this is a 16B, the rectifier is a type 80. If this were a 16X the rectifier would be a 5Z3. You would not want to use a 5z3 in your chassis, because the higher filament current would stress the power transformer.  The 16 chassis used in console models, had a more robust transformer.

Steve