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If you have an HF there aren't any d16 heads that will work on your motor because the HF has only 2 valve releifs on the pistons. You could swap to different pistons at the same time you swap heads (your choice of D series piston, the piston choice will directly affect your compression ratio) and then it would be possible to put whatever d16 sohc head of choice on there. But then you have to weigh it out wether its worth it to do all that work on an old HF motor or just purchase a complete d16 of choice for $150-$500... If you do a head swap I'd suggest a d16z6 or d16y8 head, you can use corresponding pistons to the head to have a "like stock" compression ratio or you can use say d15b2 flat tops to raise it a little. theres a d-series compression ratio calculator to figure it out, just do a yahoo search to find it Im too lazy.

Also just noticed your screen name is d15b2 if you have a d15b2 then you have a DX engine and you woudn't need to do a piston swap, d15b2's have all four reliefs and its factory piston shape will give a nice 11:1 compression ratio with a mini-me head swap
 
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