Was surfing on ebay and found the outside mirror that was used on the Vanishing point challenger. They are 57 for a pair and come from Taiwan but if your making a Vanishing point clone this is what you will need.
Another guy is selling them for 95 a pair. I will have an extra as you only need one. plan on keeping it in case something happens.
Now to get new bumpers, I had mine powder coated 18 years ago. Just type in 70 challenger mirror, its the rectangular chrome mirror. Only had two left as of today, im sure more will show up.