In a nutshell...it's slightly bigger and smaller than a Novi 2000 (1/2" larger scroll but it's a 3/4" thinner overall and moves 50cfm more air ) It's more or less the same blower but they came up with it specifically to work on the '05 Mustangs due to pacakaging restraints.
In terms of sound...since they share the same gear drive they will sound just like any Novi blower.
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