because of his first question i think he means whats the physical difference. :dunnothere is no big gains with shorties.,and steeda has a sale on there long tubes right now
you in southcaroline right? then o/r is fine. pypes is a good brand better then bbk in my book. what year z28?? must be like before 93 because 93-97 is drivers race most of the time the z will edge out with the win. and 98-02 is no contest with a stock mustang even with a shitty driver you still woud lose unless you only race to like 60mph. but check out pypes brands on youtube and you can hear some sound clipsi raced 2 of my friends that have z28s beat em both and they started callin my that so i figured wtf haha