Tom, glad you found one! My project goes on and on....apparently impossible to put the exhaust manifold back on with out taking the header tank off as well so in the process of doing that we found the header tank retaining bolts had become one with the block. So knowing that MMA used old Perkins/Westerbekes in the small diesel course I went there and asked if I could buy a header tank from them. The water front director and I looked around at some of the old engines that get disassembled every semester by students then put back together, he said swap it out... sure. They don't run coolant through the tanks anyway.
So we are getting closer....to a fix.