Hi Doug,
I modeled this part for a Holley 4150 DP. Here are a few b/w pics of the part and a mock-up on an old 4150.
Let me know if you want to give one a try. $30 / ea + your desired shipping method. That's for my CC Bud's here. I have not published this on any other sites yet and you guys are my gunieu pigs (sp?)!
If anyone doesn't like it, or it doesn't work, I'll take it back and provide a full refund. No questions, no hassles.