You're looking for something like this, right?

http://www.peteandjakes.com/Catalog4.aspx?pid=102

I expect that Uncle Bob's advice is dead on target, as he's forgotten more about these parts than I've ever known but if you're still looking you might call Jason Slover at Pete & Jakes, and see if he stocks them, knows where to find them or can fab them for you. He's an excellent source of hard to find stuff for hot rodding - 1-800-334-7240