There is nothing wrong with running a Q-jet, I have run them on anything from a V6 to 454, they will support 500 hp, or as small as you want. There is some things you should do to them to prevent problems with them. A Q-Jet will only give the motor what it wants. Get a newer one that has a electric choke, (but not one for a car with a computor, 80's) it will be a emissions carb, but it will be great on any V6.

info ---> http://www.florida4x4.com/tech/quadrajet

Pat