Jeff,
I don't know the part number but I have an absolutely mint original Trico Tank if you want it. I looked at it and I don't see a part number on it. Anyway, I bought it many years ago and had been saving it for my build. I later learned that with the S/C model that I was building a washer fluid tank was not appropriate since they were only used on street versions. As a result, I have the bottle and no need for it.
Pictures of my now completed Kirkham car which was constructed as a ground up restoration.
http://richsd.smugmug.com/gallery/770463
Rich