I am new here and I dont no to much about Hondas yet. I was wondering if I can use a header from a d15b on a b16. Also I just got some cams and was wondering if there was a way to tell if they are aftermarket or stock. Any measurements I can do on the lobes or really anything. Thanks if anyone can help or point me in the right direction.

 

D-series(d15) header on a B-series(B16)... no.

there are so many different cams out there, and regrinds that it's really difficult to tell what you have.
hondaswap has a great list of B-series cam specs.
http://www.hondaswap.com/forums/inde...howtopic=29362 but you have to sign up with them to see it, it's free and no spam.