they will fit in to b16a ,
The manifold are one piece type , from the top header mount to the catalys adapter ,
if this o2 sensor wont fit to your plug , you could use your stock o2 sensor .
let's have some fun and write some stories about your 7 or 8....
stories including when you get it... what went wrong, what did u do.. what upgrade and what's next... and plan....