I put Nigel Richard's Avro Tutor into P3D V4.5 but had an issue with the P8 compass not working correctly. I did eventually find a fix for it and have repacked the corrected files as a CAB file that can be used in the FSX version or dropped in the common 'Gauges' folder and used in any of your vintage FSX birds.
See this thread for more info: https://sim-outhouse.org/sohforums/threads/avro-tutor-compass-in-p3d-v4-5.165586/
See this thread for more info: https://sim-outhouse.org/sohforums/threads/avro-tutor-compass-in-p3d-v4-5.165586/