Maybe i should say dowel pins. I cant belive that just the head bolts will keep the head from moving. Any takers on this topic. The machine shop that re-done my head thinks there should be some but its been 6 months since i torn down the jeep and cannot remember if there were any in the head or block. The head has 2 holes machined that looks like it would take a hollow dowel but the matching holes on the block start off with threads. Thanks