Excellent intake for a highly modified or stroker engine combo.
I recently installed one on a 454ci side-oiler with fully ported Edelbrock heads that I built for a friends replica Thunderbolt.
The car went from a 10.45 @ 129 mph in the quarter mile to a 10.22 @ 132 mph. The manifold we replaced was a reworked Performer RPM. You may lose a little low end with the Victor but in a Cobra that may not neccessarily be a bad thing
HTH,
Mike