it came with the extra pipe if u take your cat off is a long header or you can keep your cat on and it s a direct replacement of your old header.short.
from pasgaines:re:bbp header,i think it is as good as anyother header out there, bolt on was easy,it has all the connections for your sensor to screw into,but i also took my catalytic off at the same time because it came with a long tube that attaches to the header,so basically i have a striaght pipe with a cherry bomb out back,its loud,as far as performance i lost some bottom end torque and gained it back in the midrange which is what i like,cuz racing stoplight to stoplight ain't my thing, i like the highway speed,and it was cheap,got it off e-bay.hope this helps
