You are talking about the lap belts. Right? Mine don't but I guess I will have to try in a really steep hill, but in all other situations they don't lock.
So all I need to do is find is a donor car with manual belts? (That shouldn't be too difficult here in Canada). All the mounts are there? I don't have the car at the moment, but I might try that when I have the car. Thanks for the information!
Marc.