How about a rtf plane, just install the engine and radio gear, is there one out there?

Hobbico makes a version of the Avistar and Super Star that are pretty much ready to fly. The engine and radio has already been installed for you. All thats left to do is to join the wing and put on the "tail feathers". And charge the batteries and fuel the plane up.

Hope this answers your question.

Best regards,
Mike