E30 convertible fender question.

I have a 1988 e3o convertible and i have to replace the passenger side fender.
Question #1- will any e30 convertible fender work or is there 2 different e30 convertible fenders between 87-91
question #2- if there a difference in the width of a convertible fender vs. Coupe/4door

E30 convertible fender question.