ARRRRG! Call it a good learning experience or massive stupidity. I was drilling a hole into a broken off bolt for an EZ out and I struck anti-freeze. The bolt is the power steering bracket pivot bolt (top) that goes into the the front of the head on the driver's side. It was only about 3/8 of an inch in when things went south - which doesn't match up with the head I looked at in a speed shop (it looked like at least 3/4 inch deep). The head on sbc400 in my K25. I haven't pulled the head. Whad'y'all think about the reliablility of just getting the rest of the broken bolt out, cleaning up the threads with a tap and re-installing the thing with a bit of teflon tape on the bolt threads?