2 availible.    Brand new (2022) never been used 50kw diesel generators. Only have factory run time 0.6 hr.  They can be used for drone applications If removed from base fuel tank and run a smaller fuel supply 
Generac diesel 3.4 4 cylinder engine 
$15,000 each
Without fuel tank measurements
94 inch long ( or if setting it on a goosneck sideways)    61 inch tall and 37 inch wide