My Screws in the top of the car holding the Chrome pieces down are rusted.......this is a ebay bought car for me so i really don't know the history but does anyone know if the proper screws were stainless and does anyone sell it as a kit?

The original screws were chrome steel, I believe.(if they were stainless, they wouldn't be rusty! )
Check with Ecklers, or Paragon on replacements.

Thanks I will try that the problem is whenever i list t-top area all i get is t-top stuff maybe i should try fastners

You may need to give them a call on these. Paragon will most likely have them, but they may not have them listed in any cat. or on-line.

If you take one of the offending items to a bolt and screw supplier, you should be able to get bulk stainless ones.  After all they are just countersunk philips headed self tapping screws.  If you go after genuine GM chrome items they will cost you an arm and a leg, AND you will end up with the same problem you have now after a while.