I recently decided to build my first jet model and went with the YF-23. The YF-23 was designed by Northrop/McDonnell Douglas when the USAF began looking for a replacement for its fighter aircraft.
The USAF chose proposals from two companies Northrop and Lockheed. Northrop teamed with McDonnell Douglas to develop the YF-23, while Lockheed, Boeing, and General Dynamics developed the YF-22. Ultimately the YF-22 was announced the winner and entered production as the Lockheed Martin F-22 Raptor.
Northrop developed two test planes known as the PAV1 and PAV2. This model depicts the PAV1 which was later referred to by the Northrop development team as the Black Widow due to it's spider like appearance when seen on radar.
Overall I enjoyed building this kit, but it did offer a hefty amount of obstacles.
First off, HobbyBoss includes theoretical decals which do not depict markings of either the PAV1 or PAV2. To remedy this, I purchased a decal set from Caracal models. This set has the correct markings for both the PAV1/PAV2.
The exhaust area of this kit is semi-accurate. There are heat-ablating tiles which are used to shield a heat signature from infrared detection. Both PAV1 and PAV2 had square shaped tiles, where HobbyBoss chose to use rectangular tiles. I could have fixed this issue, but was a bit lazy and didn't realize it until I had already done multiple layers of paint/varnish.
My next issue was the fitting of the fuselage and wings. After gluing it all up, there were large gaps which needed to be corrected. I used both Tamiya gray putty as well as Vallejo white putty. This step was followed by sanding and re-scribing of panel lines.
Lastly one major issue of this kit is the landing gear. They are very fragile. Fragile to the point to where I had to install metal pints in both the wheel connection, and one other area. Even after the metal pins, the right set of gear still kept breaking under the weight of the model. The only way to remedy this without ordering an aftermarket set of gear was to cut 2 pieces of sprue from the runners and add more structural support.
Cheers!