Ok this is my g/fs car... She has chrome fender covers which look terrible in my opinion.. But she is afraid that if she takes them off there will be a lot of rust hidden underneath..

Here is a video of the car.. (yes it is a burnout video) but just look at the molding..

Any advice on taking this off?

 

Video - My 1993 Mustang GT

 

even rust would look better than those IMO. Just take them off, hiding rust isn't fixing anything, just making it worse.