Before anyone asks, I introduced myself already



I am on the prowl for a project car and would like to know your experience around this. The way that I see it, there will be one of 3 scenarious when I buy a car.
1. The car is not on the road, no papers etc. This will obvisouly have a couple of challenges, but can be done, so no real issue here!
2. The car is registered and on the road, and will pass the road worthy. This means I buy it and register it on my name, before I start the project.
3. The car is registered and on the road, but will probably not pass the road worthy test. This is the one I'm not sure how to handle. If getting it road worthy is an easy, in-expensive task, I will so this and transfer it to my name. If it is a mission to get road worthy, can I still get it registered on my name, but scrap it, then after the rebuild, register it again?
Any advise will be appreciated!