I have an old Ford Ranger I would like to do something like that to. Would cutting brakes like they put on some dune buggies work for steering, or not strong enough.
Also is there a reference source out there anywhere that explains the pros and cons of tracked vehicles(i.e. front verses rear drive, brakes/steering, etc. like a go to reference source for all questions regarding tracked vehicles). Reason I ask is I would like to possibly build something like a small personal vehicle.