I've had a few items rebuilt by a local machine shop. They make custom polymer parts, even when the old one is worn out. So, if your project is at a standstill because you cannot find a bushing or suspension part, then get a polymer machine shop to make you a new part. Machineists love a good challenge and may even ask to see the car when it is done. Just some advice, because i see a lot of frustration over unavailable parts.