The posts on this and other forums convinced me to try and keep the Victor manifold on my 514 crate motor, so I at the least owe you a report on the results. Stock inside, sequential DFI, 2000 cfm throttle body. Here is a photo:
And here is a dyno sheet. Tuning session was to generate a basic volumetric efficiency map, and this was the last run, as close to driving conditions as practical, hood closed:
Again, thanks to all