Hello I need some advice. I’m having to do a timing chain and head gasket replacement. Every single exhaust nut is completed rusted and there’s literally just a blob of “rusty nut” left on the studs. There isn’t really enough access too use the double nut method to remove the studs so I’ve decided I’m going to remove the head with the manifold still attached and remove the rest of the nuts / studs off the car. The only problem is is at the bottom of the manifold there is 2 t40 bolts holding the cat to the head and I cannot think of anything that would get into those tiny gaps to remove them. Any help would be appreciated. Thanks!