1963 Dart 170 2 Door Post Resto

Beautiful! As far as the dash goes, what ever you use to clean up the dash will also affect the clear coat underneath it because they're basically the same materials. I would say some cutting and buffing would be in order? Start with 3000 grit maybe? For the body I would proceed with caution if you've never cut and buffed before. The videos on YouTube make it look easy, but…. I would start on one small spot, maybe the lower rear quarter panel and go through the whole process, cut and buff with different grits. When that turns out to your liking you can then do the rest of the car the same way.
I know there are others here with way more experience in this than me so I hope they chime in and share their knowledge. Again, beautiful car!
I plan to do a lot of research before trying my hand at color sanding the paint. My plan is to start on the trunk lid with around 1000 grit (maybe finer). It will take more work but less chance of blowing through the clear on my first try. Worst case scenario is if I don't like the results after buffing, I can just cover the rest of the car, give it a light sanding and hit it with another coat of clear. The trunk can be isolated from the rest of the car so I am thinking that may be my best bet.