I restore old barn find type vehicles. One of those happens to have been a 1968 Ford XL with the 390. It had been sitting for 8 years. I assume you are looking for advice as to what you may run into if you purchase this car for restoration. Here are a few things to consider: Where was the car stored? What kind of floor surface? Well ventilated? Varmint invasion? Does the engine turn over? What is the condition of the frame at the four lift points? The transmission will need the front and rear seals replaced at the least. Brake system will require replacement of all components. Resist temptation to reuse any of these pieces. It would be a great idea to remove the spark plugs and oil the cylinders before attempting to turn engine. If there has been any eveidence of rodents inspect for wiring harness damage. This is very common. I hope this is helpful. Restoring old cars brings a great deal of satisfaction. My best advice is find someone who has either done this before or has worked on this type of car before. They can be a wealth of knowledge. Feel free to ask me more questions. I will help in any way I can.