I can believe it...
f-body's are quite simple to get decently loud..
buddy of mine was getting a 137.2 from an re 8 SEALED, and 200 watts, in a T/A
and over 140 with a brahma 12 and 400 watts.. sealed..
the Cm3's are a rather potent woofer, teammate ran them..
F-bods do decently well with sealed enclosures.. the acoustical properties of the car enhance performance greatly..
but there's nothing special, or magical about it.. any body with half a brain can flop nearly any sealed box in there, and nearly any woofer(s) and yield results..
skill is when something takes that limited room, and does a ported enclosure, and still gets it loud...
Loyd L.