I have a 1995 1800sr with 3.0 engine. Boat is not currently near me but I have to buy hull plug and I'm not sure which one I need. I will send attach a link from a shop I have access to and If anyone knows which exact size I need please do comment on the post. Also, If what I posted is not whats needed please let me know and send me a correct picture of what that plug should look like so I can find it.