Hi Gary
Here is where I got my cylinder head from:
http://www.obschevy.com/ home page
http://www.obschevy.com/pages/Catalogs.html Catalog page
Then search "head" part number on the second page you will find
1941-1953
CYLINDER HEAD w/ 216 & w/ 10 mm Plugs 839049 375.00 Each
Hope this helps.
When you say that the flywheel on the 235 is wrong bolt pattern what do you mean. When I set up my 235 to 216 flywheel what was wrong was the diameter of the crank shaft to flywheel bolts 216 being slightly smaller, is this the problem you are hitting or is it a completely different bolt pattern?
Cheers Phil