Good catch Mark...
FWIW here's the latest from 08-28-08 by Bob Walla who's been producing 409 heads.
"Not a lot of progress yet Mike, Unless you count getting the patterns done and some castings poured. Got most of the #'s for programming into the machine. Fixtures are done. Just waiting my turn. Hope to strart cutting in October now. Need to get one finished and build something huge."
http://www.348-409.com/forum/showthread.php?t=13128