9.5 Bellhousing Starter Seal

I am need of one of these:

http://www.brewersperformance.com/proddetail.asp?prod=CHS549&cat=209

For my project (see pic below).

But it is out of stock. Anyone have one, know where else I could get one or be willing to provide a template so one could be fabricated?

Appreciate any help.

Thanks.