ok this may be a stupid question but i need to know,lol i can not find anything for my engine's bottom end in my price range (jdm d15b) all i can find is d16 rods/pistons,what is the differance?i heard the pistons are the same but the rods will not work.is this true?

 

If im not mistaken d16z6 rods should be the same length, I heard the only difference between the motors was a more aggressive cam in the d15b, and the d15b has a smaller bore than the z6. Like i said above, i'm not positive on any of that info, someone I know told me. Hopefully someone that definitly knows can chime in.