I'm very familiar with that kind of stuff! Have a 69 road runner sitting here that dropped a valve at an idle so, damage is light. He and I pulled the 440 and found the bearings looking like crap after I pulled it apart for him. I do NOT want to build anymore engines for others but he is being persistent....but so am I! I'm 70 years old now and my junk is still in pieces and don't want to spend the time on other's junk anymore.