Hunter 37 Cherubini dead light replacement

[DNRJR]

I have a Hunter 37 Cherubini (1984 vintage) I want to replace the dead lights with either new ones or openning port lights. The old ones are leaking and distorted due to heat and age. And, part of the problem is the shape of the current openning. They are squared off on one end and pointed on the other. has anyone been through this delima? What was your final approach to repair this problem