I have a Japan market Mega Drive model 1. I have the honeybee US to Japan converter that allows it to play Genesis games. Here's the questions....

What are my compatibility options regarding the Sega CD?
Can I attach a US one or does it specifically need to be a Japanese one?
If I buy a region modded unit will that work or no?
What about the 32x?
Finally, If I buy a Power Base Converter designed for the Japan model, are the SMS games region blocked or would the converter run US games also?

Any help is greatly appreciated, thanks guys.