Hi Tom,
If that's the one I'm thinking your referring to, better do you homework as results have been less than satisfactory.
In the new Jan.-Feb. 2007 ACMOC magazine on page 29 there is a Co. in Ohio that has an add for manifolds.The ph.# is (937) 362-3871 & is Duane L.Helman 6423 Kiser Lake Rd. Rosewood Ohio 43070 also www.rosewoodmachine.com & also [email protected]
There was a guy who posted here a few weeks back that does repairs to cast,you'll find his post at the link.
AJ
http://www.acmoc.org/ACMOC_BB/showthread.php?t=450&highlight=Cast+welding