The difference in the convertible and hardtop glass is only about 1/8". The glass is cut about 8" from the back end and angles down that eight inch. It does look like the glass is not square. Is that the original glass you are using?

The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!