Well.. I can't even remember the last time there was an ESC that was made for pushing 2 motors.. I knew there were some early monster trucks that used 2 motors.. but with the advent of brushless.. 1 is all you really need! I remember the early brushless systems made conversion kits to run 1 motor on the monster trucks. So.. sorry can't help you there. You might want to make a phone call to some of the ESC companies and tell them what you are looking for.. maybe one of the tech guys can help.
As for the servo.. depends on your radio and servo types. It's a little trickier these days if you have a radio that only runs digital servos.. then you will need to make sure your new radio will work with what you have. Most of the newer high-end radios have options for both. Some of the lower end radios will only work with one type.. digital or analog.
Hope this helps a little bit.
Jerome
