Nice work. That rack isn't going anywhere! Will you be cushioning the brackets with rubber? If you wrap a piece of old inner tube around the areas where the clamps are, it will eliminate the possibility of squeaks.

You can probably remove about half of the leaves in that spring, too. I would estimate that this car will weigh about half (or less) of what the car that it came from weighs. Also, you have the engine, etc. sitting behind the axle instead of on top of it which lessens the load on the spring.

Really looking forward to seeing this one on wheels...