Bassani X-pipe question

Just so you guys know i have spent the last hour reading through old posts about the question i am about to ask but i didnt get a clear understanding.

My question is: I just ordered a 2006 GT (which will be delivered March 1st ) and also bought the MAC SS Axle Back exhaust and am thinking about purchasing the Bassani O/R X Pipe. Do you think this would be a worthwhile purchase? I know it will be hella loud and most of the brits that live around me hate me anyways because of the 97 mustang i just sold. Also will it need a tune if it is the O/R pipe without the compcats? I can handle the SES light being on but will it "Hurt" my performance if there is no tune yet? Emissions is not a problem over here because they dont even test cars that are less than 3 years old