finding Excalibur 26 parts?

Jan 14, 2014
225
Newport Newport 28 Fair Haven, NY
If anyone by chance has any idea where to try for finding some 70's Excalibur 26 pieces, would be great! The rear corner chocks on the rail, specifically. I'm missing both on my project, and I know two other people each missing one. Or, if anyone knows places to can do custom casting, one of the other people is graciously offering to allow use of his remaining one to use as a template or mold if needed. Thanks!

(Picture attached is what we're trying to find)