Well, I have cleaned up everything on the bottom end and out of the cylinders, head, etc. Im ready to start putting it back together and ive been thinking about the head bolts. Normally these are replaced with newer car car because they stretch, are these the same way or is it ok to reuse the? If they should be replaced, could I reuse the old ones just to get it started and running (not driving)? And then swap them out later? Thanks, Cody