I went ahead and had my engine rebuilt in my old Dodge truck. The rebuilt cylinder heads are a real savings over new ones.  I figured I saved about 40 per cent over new ones which is a lot when you figure what a new engine would have cost.  The whole engine was probably a savings of about sixty per cent over a brand new one.  If I get another two hundred thousand miles out of this engine , I will be happy.  I have a two year warranty on the rebuilt engine so I think that is a pretty good deal.