Cylinder head - donor needed for '89 100 w/ NF engine

[Dave C]

I need a cylinder head for my 89 100 with NF engine.  Could someone tell me
which models and years are potential donors?

This engine differs from earlier NF engines like the one in my 87 5KS.  For
one thing the 89 NF has a newer style intake and exhaust manifold, maybe
other differences as well.

The reason I need a new head is cause the heater core ruptured and my wife
kept driving.  Made quite a mess of the interior.  I sepnt the day tearing
out the interior, carpet, underlayment, etc. all the while hoping the engine
might be OK.  No such luck.   The engine >seems< to run OK, but I can see
water dripping into the cylinders when I remove spark plugs immediately
after shutting the engine off.

BTW ... if anyone has a cylinder head like this for sale, please contact me.

thanks,
David Conner
Columbus OH