

Long story short, I broke quite a few transmission pan bolts off. (never take off rusty bolts when in a rush)
and luckily, once I got the pan off most of the leftover studs from the bolts were easy to get off using a vice grip...
of course except for these 3 bolts, now studs. Any help would be greatly appreciated!
1 stud has been mangled by my vice grip trying to get it off. I've backed it out a few turns but it seems stuck now. I sprayed PB Blaster on the bottom and top, tried to heat it up with a soldering iron (didn't do anything), dremeled a slot into it to use a flat head, the sides of the slot just broke off as I tried to turn.
Any other ideas?
2nd stud is recessed inside this protrusion. I tried using 3 different bolt extractors with no luck. In the end I drilled all the way through to the top and can feel the hole at the top but it still won't budge.
My guess is to use a bigger drill but size, but I don't want to mess up the threads more than I already have. The threads maybe a lost cause and I'll probably have to use a heli-coil type repair, but is there enough room to even insert a heli-coil?
3rd stud is coincidentally stuck inside the only other protrusion. I use this fancy ($$) tool and it seemed to be working, until it snapped off inside the stud...Its some super hard steel too, because when I went to use a punch to put an indent into it so I could drill another hole in it, my punch became dull...
I guess I need to get a harder set of punches and drill away. Any other thoughts?
Thank you for the help and thoughts!