[jjzepplin]

You are probably right. I guess it will not hurt to try. I think I will run a drill bit in the manifold bolt hole just to get some fresh clean metal to weld to then give it a shot. I have been successful on two other occasions with drilling a hole and then hammering a hex key in and 6 times all the bolts came out. The engine was not in the car though. I saw a fella on youtube do the same thing but pounded a six point torx type bit in that had a 1/4" driver head on it so he was able to use a ratchet on it.