I have a Holly 650 cfm carburetor for sale. I was on my 67 442 when my son owned it and when I decided to do a complete restoration, I removed it and set it on a shelf. It's been there for 10 years. I cleaned it up some but it will need a good cleaning and probably a kit.
As I recall it ran better with the Holly than the quadrajet but it was a while ago.
I am asking $50 for it.
Let me know if the price is out of line.