OK, they told me they got the nuts off and that it is now done. This means that the studs must have been reused since they claimed that the studs were back ordered and would not be here for a week if they broke them or could not reuse them. I don't have an adjusted price yet, and I do not intend to pay any more than the agreed upon $480 but I assume that there will be some spirited discussions tomorrow (I am not in the habit of losing these types of discussions). I will let everyone know how the butt-dyno testing goes.
Just a thought, when I spoke to the guys at DT Headers after my install, they said that Toyota has very few problems with headers in general (compared with Jeep and others). The LC cracked manifold is unusual. He also said that Toyota cranks the bolts down so damn tight at the factory that they are VERY difficult to remove, but probably cause less problems for them long term. A good socket set and plenty of PB Blaster is needed. He said that Toyota does this probably to prevent leaks but it is hell for trying to get those headers off. I bet your shop just finally got fed up and pulled harder to finally get them to break free. Good luck tomorrow.