H series exhaust manifold
 

I am looking for a exhaust manifold flange for my friends h23 to make a turbo manifold. I have found for the b series but not h. Also can pipe fittings like the stuff from mcmaster carr be welded to the factoryflange if I cut it off. I'm pretty sure I can get it to weld but it has to be pretty strong to have a turbo hanging off of it.