There are some people on the famous auction site that make 8 volt fuse lamps that work on AC. A warmer white color would probably work best in your unit if you want to keep it original, though there are also other colors (Marantz blue, green, etc) As for the indicator lights, on most of these kenny's those should also be 8 volt. I have been able to find AC compatible LEDs that work for that, however you may want to put a colored filter over the LEDs since they can be very bright for indicator lamp replacements. Nice receiver by the way. I hope I could help.
-R