It's not a great idea plagiarising images and then publishing them for people to use. Of course if you have permission to use them then that's fine but I don't want people thinking some of these images are your own work if they're not (referencing your latest PSU and PDU units).
You're right, and I should have stated this previously - Credit for PDU, PSU, BLS, ALS, RRV Skoda Octavia, RPU Volvo Estate, Ambulance CSU and CTARV all goes to Legacy - Vehicle and Aviation Prints of Facebook - no profit has been made from the re-use of these images and edits have been made to the scale and background only, bar the addition of images with lights. Thank you for pointing this out @DEdwards
Further to this, some of the above graphics were also modified in order to expand and improve on existing graphics to an extent which I would constitute as having been morphed into my own work, but due credit goes to Legacy Prints for the original graphics nonetheless.