Like this? (OH, you probably mean the hardtop version - someone out in the Midwest, IIRC.)
How bout if you got some boat canvass or even some Haartz fabric?
http://www.haartz.com/exteriors/stayfast
http://www.haartz.com/exteriors/cloth-topping
And from Amazon:
https://www.amazon.com/Haartz-...ywords=haartz+fabric
It comes in about 6 different colors from black through blues and into gold.
Glue it onto the top fiberglass like they did with a "vinyl top" in the 1970's!