You may have to widen your search or build your own adapters.
Here is what I think a full restoration on a 2230 should entail, the 2215B would be similar.
Complete cleaning of the covers, face plate, knobs, meter faces, rear panel and as much of the chassis as possible.
Polish face plate, dial 'glass', meter faces and knobs.
Clean and lube all the controls and switches, clean and lube the tuning mechanism.
Clean, polish and treat all the jacks.
Replace all the small electrolytic caps with 105 degree rated parts, film caps used whenever possible and in the audio signal path for best performance.
Replace the main filter and output coupling capacitors with good quality parts that match the size of the old ones as much as possible so that the original mounting hardware can be utilized
Replace any suppressor networks with AC rated X1 types.
Clean all the heat sinks, apply new thermal compound.
Remove any glue from the circuit boards, it can become corrosive with age.
Replace any out of spec, corroded or overheated components.
Perform any applicable production updates and service bulletins.
Install LED replacements for the meter, dial, pointer, function and stereo indicators.
Replace the dial and meter vellum.
Align/adjust to meet or exceed factory specs, including a complete alignment of the AM/FM tuner and the MPX decoder along with adjustment of the bias and DC balance.
Run a complete performance test of all functions, power output, distortion, frequency response, etc.
Tom
