www.cliffshighperformance.com. He IS the quadrajet answer man, period. You will need to initially send an email, he is a year behind on carb repairs. He has a VERY good book, that WILL help you, get the book. He will need your carb number.
Any carb needs to be tailored to the individual vehicle.
He will need to know specifics about your vehicle, use, etc.
I'm wondering about edelbrock's ability to help w/ a Q-Jet, they made some for a while, that ended about 12 years ago.
Guys that race NHRA, IHRA stock and super stock class cars, race them. Some super stockers run 8 second e.t.'s w/ them