Keep the Q-jet. It's the best design ever devised. The tiny little primaries allow excellent throttle response and mileage, while the huge secondaries feed the motor when you step down on the loud pedal. Best of both worlds. Get some books or DVD's and learn how to tune it. You'll end up with the best carburetor there is and add a little to your own expertise.

Cliff Ruggles is one of the Q-jet gurus that I would recommend for information.
http://www.cliffshighperformance.com...history_1.html