will a 1.6 d16 header fit on a 1.5 d15?

 

if it just replaces the top cast iron piece then it should bolt right on. if it replaces the downpipe as well, then you could have some issues with where it bolts to the cat. as far as i know, all of the d-series exhaust manifolds are the same pattern, even the dohc d16a. you can probably make it fit pretty easily.

 

It shouldnt replace the midpipe... its just a header

 

every honda one ive done does.

 

D series will swap to D series
B series will swap to B series

D will not swap to B
B will not swap to D