I tried to make an X-37B with MK2 parts. I really like how it came out, even though the fuselage isn't that close to the real X-37B. It has 3216 m/s of delta-V in vacuum and it has a small docking port in the cargo bay for attaching small satellites. Unfortunately, some of the wings clip into the bay which to take away a bit of cargo space. It is powered by an RTG so you don't need to worry about batteries or solar panels. It fits inside the 5m fairing from the DLC but it is unfortunately a little too big for a 3.75m fairing.​