First of all, I want you to know that I read a lot of posts and used the serach feature extensively before I posted anything. I found a lot of info about the Q-Jet v. the Holley, but wasn't able to get enough info to really make a decision. Here is waht I think I have learned. 1) General consensus is that a rebuild Q-Jet is pretty darn good. 2) The Holley is difficult to tune and requires a fair amount of attention. However, this appears to be true mostly of the "-1" variety and automatic choke version. 3) I found very little suggesting the Demon was worth the money, but also very little about it at all. So here are my questions. 1) Anybody run the Demon Trucker? What do you think in terms of tunability, staying tuned, and of course performance? 2) What about the newer "-2" version of the Truck Avenger with a manual choke? Does it still require a lot of attention? I am running a 383 roller. Any and all (constructive) input would be greatly appreciated.