Hey guys. I'm almost done with my '66 401 Nailhead and I currently have the original single 4 bbl as well as an Offy 2x4 setup. I hear the offy does not flow well and I would actually lose 50 horsepower. That seems like an awful lot to lose! Is this accurate? If so, I'd love to get some input from you guys about other intakes like a 6x2. I know they would be much smaller carbs (either Holley 94s or Stromberg 97s) but I wanted to see if anyone runs these and how you like it. Also, anyone have experience with the Speedway versions of the 97s? They are called 9super7s and one of my friends bought one and hates it although it gets great reviews online.