My '87 H31 has the original poly tank, and I want to install both a fuel level sender and an inspection port - it has neither.Other than a regular plastic inspection port, I haven't found anything suitable.Does anyone know where I can find a decent inspection port to install on the top of my tank? If possible, I'd like it to be metal, so I can mount the sender in the middle of it, and only cut one hole in the tank.Cheers,Bobs/v X SAIL R 8