What parts can a 1973 Swinger use from other Swingers?

Thanks everyone! I have owned a couple of 67 Camaros, 1965 66 Impalas around 30+ years ago. My son turned 13 and I started looking for a project car we could work on together, I purchased the 1973 Swinger and live the body style, my first Dodge and I’m pretty excited. My son will get his license in 1 1/2 years, I want to surprise him by giving him the car when we are done with it. It’s in great shape. I’ll post more of what I’m looking for. I hate the yellow interior so I think that will definitely go for sure, I hate to do it because the headliner is flawless, but that is all

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