Before it hit's Ebay, take a look.
ZEATER, Steve has a BIGS performance 950 HP holley for sale. It has maybe 400 miles on it. He ordered it for the built 428 and has since stroked his 428 so he had to go bigger. The carb will be in PERFECT working order and I can set it up to your combo before shipping. This is the same exact carb I run and I love them. This carb should work perfect for anything ranging from 400 to 525 HP.
Steve is out of town for a few day's so I can not give you a price. They are $750 new. If you have any interest and want to talk with me about if it will work for you just drop me a line. I can tell you if this carb hit's ebay it will won't last. I sold my BIGS 750 HP on ebay for a buy it now of $450 in 4 hours.
These carbs are nice.