I highly doubt you will get all the ULLS-G history paperwork with any of these vehicles. Sometimes you may find the 5988-E from the T/I inspection, but even that is doubtful. With my ex USAF M35A2C, I got every piece of paperwork that was associated with it, from the build ticket with hand written serial # at AMG factory to the email saying to turn it in, and every part that was changed on it and inspection record over it's 18 years at the airbase it was at. Paperwork is important, but in this hobby, rather rare. I prefer to let the vehicle speak for itself. A good mechanic who knows the FOV can tell you a lot about the vehicle and how well it was or was not maintained just by looking at it for 20 minutes.
Sometimes military PM is absolutely nothing. Ever see a ECS with 5 mechanics with 500+ vehicles to maintain or a unit with a rear detachment of 10 undeployable soldiers to maintain a battalions worth of vehicles, and only one of them is a mechanic by MOS? Things get pencil whipped all the time. But on the other hand, some units do impeccable jobs on maintenance. In my experience, it is all about keeping things off the 026 report so it doesn't have to get briefed, and unless it is deadlined it's not important enough to worry about, which makes it fall somewhere in the middle of the road of how well it was maintained.