Oh yeah, it's big, which i wasn't wild about either. If it was N1/Hi-power style it would have been a deal breaker. The unique styling of the GT Spec canister, with the beveled transition from canister to tip, makes all the difference for me. A minor detail, but one that hasn't been copied by China 6 ways from Sunday.
Also, the bumper cap really ties it together, and the AP2 bumper seems to flow better with the bigger mufflers than the AP1.