Got a question for all you guruus.....

Okay I am a member of hondaswap.com and honda-tech also. I have asked them both the same question. I own a 90' CRX HF. As you well know that the head on the HF only has like 8 vavles. Well there was an article on hondaswap.com where they swaped the head from a D15B6 to a D15B7 and swapped the ECU, Intake manifold and tranny and said that they were able to get substantial gains from the swap. BUT! Honda-tech.com said that it wouldn't work that there would be valve collision and that it just wouldn't work! Some on honda-tech said that it would some said that it wouldn't. So I pose you now the same question.