header sizes

hey just wondering, my friend has a header for a gsr stainless, dc header, he told me that i could have it for 100, he is getting out of imports. I have a header already but it was a generic brand and it is getting all rusty.

my question is being that i have a b16 will his gsr header bolt up at the cat without any modification. I know it will bolt up fine at head, but at the cat is where i am unsure

You'll Probally Need To Do Some Light Mods To The Pipe @ The Cat. End But, It Should Fit Also Because It's A Dc Sports It'll Have A Carb # On It Which Your Generic Probally Won't Unless It's A Fake #. That's Good So If You Ever Have To Pop Your Hood For A Cop They Won't Question The Legality Of It.