You might want to hire a Pro do replace the C4 Convertible top for you.
No one has replaced a top and writeup here on Digital Corvette that I recall.
Might be in the Archives here.
Been around since 2011.
Last guy that did it himself and a writeup was Corvette Mike with his 87 C4 Roadster Triple black.
CFC4 about 2009 I recall.
Have to search there.
Turned out Great. Mike was Handy.
The top on my 87 C4 is ok yet but it's showing its age.
Want to replace also.
It was new in 2007 when I bought my Vette.