Bud, I have one new 2.1l AMC head right now on the shelf that I can ship out
to you tomorrow.  I would like $395 for this one.  If you aren't in a rush I
can get new ones shipped out for $350 but this takes a few days.
I would recommend getting a complete engine gasket kit as well.  I sell these
for $99.  They are German Elring.
One thing to beware of on AMC heads is that lately they have been using no
name intake valves that mushroom.  I would have the shop remove and replace
these valves with some TRW valves (which is what the exhaust valves are so
the whole thing doesn't make sense) and you should be good to go.  Also I
have heard that the AMC heads are made of a different alloy than the original
heads and therefore aren't as prone to corrosion (can anyone confirm/refute
this?).
Thanks
Ken Wilford
Van-Again
John 3:16