This FPV kit design for the old version of 9X transmitter: TGY-9X (TURNIGY/V2) or FS-TH9X (FLYSKY). I design this to fit in RC305 video receiver module on this transmitter so i could link it to my video goggle without needing a tripoded ground station. 9X model lack of mounting bolt unlike the 9XR version so the support beam goes through transmitter antenna root for extra holding. Currently it is design to carry RC305 video receiver module, the upper plate/holder parts are swappable with "XL-RCP 2.0 FPV kit for 9XR" so you can use its back the FPV LCD mounting back and forth.
For more details and build instruction check it at this url: http://www.supermotoxl.com/Real-object-design-for-hobby-models/Real-object-design-for-hobby-models/xl-rcp-50-fpv-mount-kit-for-turnigy-9x/menu-id-118.html
- Do take note i'm using Z-modeler to build this 3D parts so would look "cracky" on some 3d viewer but no problem during 3D printing.