Picked up a free Athearn SD-9, in an incorrect Rio Grande paint. Shell has since been cleaned, motor was just cleaned, as were the trucks and frame. It's an old, original unit, with the cast metal trucks! Looking to maybe remotor this unit. Wondering what a good replacement motor would be, and what dimensions?? Hoping to do a superdetail, or at least a semi superdetail job on it. New grabirons, new headlight castings etc...And maybe DCC/Sound. So, information on a DCC/Sound set up also appreciated. Thanks.