im looking to buy a jdm d15b but after i get it what parts do i use to modify it usdm d15? d16z6? or what

 

Vx Motor for the botom D15z1 And d16z6 for the Head.

 

so if i were to buy a camshaft it would be for a z6? intake a z6?

 

Yes The casting on the head is A P08 its the same as a D16Z6. However the D15b Cam Is more agressive. Thats Really the only difference.

Edit: Forgot to tell you the intake Manifold is also the same. Except it doesn't have a Purge valve mounted to it like the D16z6. But you dont need that anyways Since youre is mounted on the firewall next to the map sensor.