Q-Jet all the way. When I built my truck the motor was built around a Holley projection system. But I couldnt get the damn thing to work right so I "temporarily" bolted on an old Q-Jet off one of my Chevelles. 3 years later I still havent tryed to hook up the Pro-jection again. No need, the Q-Jet works so good Im afraid to touch it. Its on top of an Air-Gap intake w/a spread bore adaptor. In this "stuck" picture I left the truck idling for 15 mins, no problem. Then I shut her down and she restarted 30 mins later..easy.