Yes, the tops can trap water and lead to rust issues, but that was mainly on older cars like mine that weren't built with any longevity in mind. Newer, and replacement tops can be installed and sealed much better than they were from the factory back in the 70s and 80s, so I don't have any qualms about it. In fact, I asked the installed about that issue, and he said he makes them as water proof as possible, and should be good for many years if properly cared for.
I have pictures of silver Novas with and without black tops, and I I prefer the look with the top, but everyone has their own preferences. Also, I am trying to keep the car fairly original in appearance, and it did leave the factory with silver paint and a black vinyl top. Admittedly, the racing stripes would diverge from that theme, buy I like the looks of them, and if I do them in vinyl, they can be easily removed at any time.
View attachment 859517View attachment 859518
I have a local shop that does powder coating, and they have done a lot of items for me, John Deere sheet metal, tool bench, mail box post and some other miscellaneous parts, and they have always done a great job. Years ago, before they opened their shop, I had a shop in Elkhart powder coat the subframe for the Nova, which also looks great.
The only problem with the wheels is that while most of the wheel is argent silver, the areas between the spokes is a satin black, and painting or powder coating those areas involves a lot of masking to get it done correctly. They do make a masking kit, but it is only meant for painting, not heat resistant for powder coating. I'm going to clean the wheels up and see just how good or bad they look, and then decide what to do with them.