i was interested in getting the catted x pipe by bassani from brenspeed for my gt. anyone have this and did it give any horsepower gain? was it difficult to install? sound good? i have to get the catted ones cause i happen to live in one of the 2 friggin counties in indiana,out of about 60 friggin counties in this state, that still have the damn emissions testing bs. and they get stricter every year! brenspeed says i can pass emissions with these pipes but im not so sure. any info would be great.