A crusty oldie. My normal reaction would be to retire it. However, if you are willing to diagnose it (could be a host of issues); we can help some.
1. Did you ever have it running? If so, how recently?
2. If it did run, did it run well? What were the characteristics... idle, WOT, pumping water, etc?
3. Have you diagnosed a bad CD? If not, you must do that, as throwing odd parts at a problem is costly, and seldom accurate.
For example... do you know whether you have spark? Any idea what the compression readings might be? Do you know when the carbs were last overhauled?
Since you are already Remote, why do you want a replacement RC box? Parts are generally available for the older boxes... within reason.
Precious few parts are still available for that model, so you MUST diagnose, and we can go from there.
To DX the motor, you may want a factory service manual... long out of print... but I do have a reprint you can have for $25.00