got a header off an 85 13b, onto a 87 13b, I got no o2 sensor inlet and haven't checked for room wanted some opinions( other than what the **** and stupid) just want to know if its worth my time and the hearder isn't stock its after market you know anting to make the N/A push a little harder...

 

13b header will fit engine, if it fits around chassis, u are fine
O2 bung could be welded wherever u need it