d15b8 what head to gain more hp??

[89civicFlyz]

i am in the middle of swaping a d15b8 non vtec into my ef hatch and i was wanting 2 no what would gain me some hp on the enternals

 

[K2e2vin]

Well, you'd be better off just swapping in a D15B7. The B8 is similar to the B6; they're designed to be efficient at lower RPM and some have the 2-valve relief pistons too(B6 and B8 are 2-valve heads instead of 4). If you already have the 4-valve-relief pistons(PM3 pistons), then you can simply swap head from a D16A6, D15B7, etc.