How would you go to get this out?
 

I am trying to get the header the last guy put on the car off.... but the bolts are stripped, and i hack sawed through one part and got the exhaust off the no chance the header is coming out.... i sawed at the point where it is right after the oil pan, and i need to get to the oil pan so i can get the pistons out.... its just the header left now but idk how to get it out, any one have any idea how i can get it out? ive been stuck on it for 3 days now and its only making me want to put some explosives in the engine bay.

RE: How would you go to get this out?
 

Try heating the bolts/studs up with a torch and (after putting the tourch aside) spray a penetrante oil like rust buster or pb blaster on it. The heat will help the liquid get sucked into the threads and it should come off then.

RE: How would you go to get this out?
 

1. Torch the bolts.
2. WD-40/liquidwrench the bolts