The one for the intake manifold, I used some scrap pieces of aluminium I
had laying around. maybe 3/16", and used the old gasket to trace around.
drilled 2 holes, rough cut it with a hack saw, filed the edges to pretty it
up.
for the exhaust I replaced it with one I had off a 78 300SD pre EGR.
maybe more work
, but then was cleaning things up and replacing
the turbo and other stuff at the time.
Charlie