replacing frames and ports
Grey stocks both the parts and the complete unit. The ports come in clear or smoked, which are very nice. Grey prefers to sell through a dealer...West Marine will special order and Boat U. S. has them in its catalog. Your ports are 5x12 and one size larger, which I believe is 7x15. I recently replaced some ports and some entire units, after twenty years. Grey predicts a life of ten years. The frames can be Awlgriped, which both protects from UV and makes old frames look almost new. Your frames and trim rings are probably screwed in and bedded with silicon. You can thru-bolt the vertical sides, but the horizontals will not line up due to the slant of the cabin sides. Replacing the entire unit is not a complex job (as long as you use lots of masking tape to prevent a catastrophic mess), but it is a time consuming one.I was not aware of the Newfound Metals Ports.