I have this boat that the plate that the drain plug goes into is missing, the old plate was from what i can figure was around 2.5" . the only ones i am finding are 2" and the screws holes in those are too close together and will not make contact with the transom for the hole in the boat is over 1" in size.
i searched all over the internet and cant find any larger than 2" with a 1/2" drain plug. the only size larger than that was a 3" which was too large