I've never made a custom engine before, but this should be considered my first prototype. The D.101 is an engine meant for bomber aircraft, however, you are still allowed to attach it to fighter aircraft. It has it's own fuel supply on it, being 101 gallons so you don't have to store fuel in the wings or other parts of your aircraft. This engine is quite heavy, due to the number of special parts and fuel capacity, so be careful when installing this on a fighter aircraft. As for the statistics of this prototype, it has a total of 1500 horsepower and 1350 RPM (2700 RPM and 3000 horsepower in the Overload mod). This engine can prove to be quite durable during combat. The D.101 can take many hits, but don't be careless. Any engine in Simpeplanes can break in just a couple of shots! This engine won't let you down in many combat situations, but there isn't such thing as too much caution. Please tell me some pros and cons in the comments so I can release a Mk II version at some point. Tell me if you were using a bomber or fighter too. Also, something off topic, this description was written in Grammarly, so if you think this was a more professionally made description, you can thank Grammarly. other than that, I have nothing to say so without further ado, enjoy!