I have been searching for replacement plastics for KITT's t-tops. This is the plastic trim on the interior of the t-top that runs between the A and B pillars. Mine was cracked and there are no reproduction pieces to be found.
I came across a guy on Thirdgen.org parting out a '90 Trans Am and he had the t-tops listed for sale. The plastics looked great and so did the glass so I inquired about the condition of both just to be sure. It turns out they are in great condition and as an added bonus because they are from a '90 they are the locking pin style latches and not the '82-83 hook style latches. GM revised the latches starting in '84 because they held and therefore sealed better. I asked if he had the mounting hardware (car side) for the pin style and he said he would sell them with the t-tops if I wanted them. With the hardware I will be able to easily convert KITT from the hook style to the newer pin style.
I said I would take them, sent payment and he shipped them out this morning! Pictures to follow when they arrive. :)
As a side note: I found out through a lot of researching that most if not all the factory glass t-tops are mirrored on the inside. This was something I really was disappointed in when I first got the car. At night the mirroring makes it very hard to see out of the t-tops unless you are under a very bright light source. I was worried about the reflection of KITT's dash, but since it is highly unlikely that I will find a non mirrored set I have decided to put up with them (the '90 set that is on it's way is also mirrored).