Thought I'd replied to your post. But it's MIA. The Nato pintle hitch only uses four if those bolts. You may well be able to source one locally.
Made by Dixon bate, you can also have them shipped from the UK by places like Craddocks and Paddocks.
Connect with your local Land Rover club. They probably have a good contact who can set you up with quality recovery equipment
A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.
I don't know about the brakes, only their unreliability.