The passenger side connection to the header isn't too hard. The driver's side is a little tighter. The bottom stud can be accessed from the bottom of the vehicle. I haven't removed the studs from the crossover back.
I'm actually stuck right now myself on the bottom stud. I've tried getting it from underneath the car with a universal joint, and I've tried some broken socket extensions, but I can't get enough torque on it. I'm going to see if I can get a breaker bar back onto it...we'll see if that works. I'll try some more penetrating oil as well.
