Uhhhmmmmm...........have you never heard of Marcella Manifolds? (note the "M" sticker)
You must be new.
. (Just ribbin'ya)
Seriously, John builds some of the very best manifolds on the face of the earth. I have fabricated a hand full in my 40 years of building race engines, and when I look at the quality of a Marcella manifold I hang my head in shame. I have built 5,000+ HP gasoline race engines, too. Very proud of them. His stuff is equal to Michael Angelo in the fabrication world.
Here is a thread to prove my point:
http://www.yellowbullet.com/forum/showthread.php?t=127750
Notice the Dart/Buick cast manifold he built. If you have built some, please show your work. I would love to see it. I might learn something. The older I get and the more I learn..........the dumber I feel.