Ford F-150 Manifold Bolt

Hi All: My 2002 F150, 4.6l Engine Has Been Diagnosed With Rusted Exhaust Manifold Bolts. The Truck Has 41,000 Miles. Two Garages That I...

The Studs That Attach The Exhaust Manifold To The Exhaust Pipe Are Shot (corroded, No Threads Left). I Cant Figure Out How To Remove Them To...