Check out threads by Fun GT or send him private message.
He had bracket and other issues with is convertible top
last year, went through Quite an ordeal and managed to get is solved.
He likely has lots of info on that year top.
Plus 1 on above.
Check with Fun GT.
Don't know that used is any good. They leak apparently.
Salvage yards best option I would think.
Used ones removed by individuals fixing an issue are likely faulty.