looking for used chrysler 318 cast iron timing chain cover

[KMD]

Just thought i would check if anyboady has any old parts laying around they want to sell. I am looking for a timing chain cover from a 1975 or newer 318 marine (the one without the hole in the middle). It cant be aluminum (I am in brackish water), the factory marine ones were cast iron I believe. If you have one or know of one let me know.

Thanks
KMD