Well, my first broken exhaust bolt

[anthonygs1000]

I had the same problem broken exhaust bolts I tig welded a nut on to the end of the broken stud and the heat from the welding helped me me rock the broken bolt out

ant

[rideOn]

a 50/50 mix of ATF and acetone was measured to be the best on stuck bolts. this combination required far less torque than the liquid wrenches and pb blasters. you can get acetone at a tractor supply

[81GS750]

You can buy them direct form the manufacturer, I almost bought a set, but decided to get a good set of reverse cobalt bits instead. Here's the link:
http://www.qbaroo.com/quikcentercom/