Stan and fellow vanagon types
\
The OEM heads alloy sucked so bad that they would have pitted around the JB 
weld no kidding and it does conduct electricity
Jb weld does have some shrinkage over time but not enough to make a 
difference.
you just cant beat the alloys of the AMC heads and there ability to not 
crack and resist pitting.. Never have I seen an AMC head that cracked and or 
leak coolant
The idea of putting a OEM head back on a van rebuilt or not is nothing more 
than an act of foolishness or desperation plan and simple.
I use nothing BUT rebuilt AMC heads on my own vans and I use nothing but new 
AMC heads on my rebuilt engines because that's what works

going faster miles an hour with my new radio on and wishing I had better 
speakers
I remain
Bob Donalds
Boston Engine Exchange