I never said it could not be done on a dual cam. I simply said very very few people have it. Even less with a SOHC motor. Hence it's apeal. I guess however, we're compareing apples to oranges.
A better debate in this case would be to compare a b16a2 to a b18c1 motor. *shrug* I perfer the b16, as it has more advanced technology, the head flows better, better R/S, etc...

See my point? I guess since there is so little support for D series other then the z6/y8 in general, we have to compare the SOHC to DOHC's.... It's just not a very good argument because of course a DOHC can make more power. A. It's got (generally) more displacement, B. Has better technology, and C. A second cam.

In ANY case. It comes down to who wants to spend more.