I'm getting some loot together to swap out my D16 for a B18b. I'm going to give this motor to my brother, and I thought of the idea to swap that head for a b16 head to get him some more power. He knows Hondas much better than I do, and he couldn't even answer that. I figure because it's a b-head to a d-block, it won't work, but I really don't know too much about the technical sh*t. Thanks

It won't work.

b-head to a d-block

No b,h, or f series anything(as far as I know) will fit on a d-block... head wise anyway.