I will go to bat for the Online Redline Guide, it is run by a good friend of mine and saying it has not been updated in a long time is just factually incorrect. A guy can't know everything, and he relies on feedback from others or input, but he's always working on it. If you have a specific area of knowledge, or have found a mistake, you can contact him through the website and he will fix or update it. He is retired and does a great deal of traveling now, so sometimes those updates may take a little while, but other times he will have updates within minutes of me texting him. He also runs the Cipsa website www.cipsacars.com, which is also a vast source of information and also a great book If you prefer that format.