Looks damn sick, the US army is probably green with envy 
How did you get enough mechanics to fit so many engines? I’m pulling my hair out just trying to get to 12 mechanics. Only thing I’ve found that helps raise it is disassembling/reassembling mini nukes and repairing heavy vehicle damage.
Edit: Unless you disabled that requirement or something cos I don’t blame ya, they don’t always make much sense. You don’t always want an engine just for actual motor power, it shouldn’t really take more mechanics skill to mount an engine just for generating electricity as an example. It wouldn’t be connected with other engines and the requirements get kind of crazy later on 