58kw runs excellent.  Johndeer 4045t engine has 1394 hours. Is rusty on the outside. But pretty clean inside  
Panel that goes over breaker switch is missing 
Could be used for drone if removing the big fuel tank and run a smaller tank to it 
Also you would have to remove the front housing.   Example in pics. 
96 inch long 63 inch tall 45 inch wide. With tank removed and front housing