What's a good project car to dismantle with my son so he can learn about cars?

I want to find a car that I can take apart with my eight-year-old son so he can learn about how a car is put together. It should be small so the components are light, not too many sealed electrical bits...

I want to replace the front drum brakes on my 1958 MGA with discs - what do I need to know before going ahead?

I am considering replacing the front drum brakes on my 1958 MGA with discs. It seems a simple process and there are several kits on sale. What do I need to know before going ahead?