Hi Greg,
Steve Payne here.
AED is a speed shop / custom carb builder here in the southside of Richmond with a Mustang chassis dyno. I go over and dyno my car every time I make a major change to document that I am moving in the right direction.
They custom built a carb for me for my Roush 427R and then dialed it in to the "T" on their dyno. They know Holley based carbs inside and out. Their number is:
(804) 271-6076
web address:
http://www.aedperformance.com/