Bob,
Lyle, Jaime(VPR-KLR) and Kevin all have hard tops from APE. Craig Anderson's company. Craig moved to Texas awhile back.
http://www.ffcobra.com/FAQ/products/hardtops.html
http://www.northracecars.com/catalog...op/hardtop.htm
Norm Deeley from Florida makes a top. His web site is under construction.
Whitby motors is supposed to have a top under development.
Mike