i have the crrect screen for open car and think it is the same isnt it as the hardtop screen
Now you mention it, they do look the same.
Al's point is very true - copying an existing hardtop from another car is far, far easier than making a new plug and mould. But it does require:
a) that someone has a hardtop (and I think you're saying no-one does), and
b) that they are willing to lend it to you for several/many weeks, let you take out all the windows and trust that you won't ruin their priceless hardtop.
Unless the hardtop's owned by an existing friend, (b) is almost harder than (a).
Andrew