Used fixed ports for 79 Catalina 30, Do other models fit?

[lambchop27]

Hello-
I'm in the midst of an overhaul of a 1979 Catalina 30 and I'm looking for replacements for my ports, the 6 largest ones for the main cabin. I was wondering if anyone knows whether ports from another make/model might work? or from a different model of Catalina?
Long story but I lost mine in a car crash. I know there is a kit for replacement acrylic pieces to be attached without a frame to the outside of the cabin. I'd prefer the original with the aluminum frames but I'm having a difficult time finding any. Any suggestions would be greatly appreciated, thanks!