I suggest you contact:
http://stores.ebay.com/Turners-Performance-Programming
I bought a top from him about a month ago for $499.00 (buy it now was $599 but he accepted $499).
http://cgi.ebay.com/ebaymotors/ws/eB...em=#ht_500wt_0
I keep cars a LONG time and know that I will eventually need a top. This is the factory top with heated back glass. I do not see that he has any listed at this time but he may have more and you can't beat the price.