I have 3 '64 fuelies (one AJ Foyt drove in AP) and I have had a 289 Cobra (with Webers), and there is no comparison. The '64 380 fuel unit was the best there was in the day, but the engine with that Duntov cam had next to no low end torque and a 4.11 was the only rear end choice to get it launched easily. Above 4000 rpm is where the fuelie came alive, long after the 289 was gone. The 289 was much better off the line, no doubt, and of course the races in '64 showed the advantage of so much less weight in the Cobra. And BTW, you could not get power steering with a fuelie.