69 notchback questions

I personally don't run someone else's car Down . But I do grin when I hear a big roar and look to see were it's coming from and see a dogshit custom that's not gaining speed very quickly.
I am not real worried about metal work on my monaco. It's likley a 2020 project. It has some bondo actually looks like they filled in between trunk extension and fender with mud. Must have got a good deal. I think I want the convertible on road first and I Havnt looked at it closely but previous owner told me the trunk floor needs upgrade.
I would really appreciate some pointers and tricks of the trade.