Been running one on my Cuda for about a year now. Works great. To tell you the truth I can't see any difference between it and a regular 3310 750 Holley except the 770 Avenger has an electric choke and a rear metering block so you can change jets. All the adjustments are exactly the same, the booster type is the same and the air bleeds, pvcr's, idle restrictors, and jets are the same size as the ones were in my old 750. I ended up jetting up the primaries 1 size, the secondaries 2 sizes and changing the power valve to a 4.5 because of the cam in my engine.
BTW: you have this posted in the parts for sale forum. Should be in the tech forum. Maybe an oversight.