when I put on my X-pipe the the same nuts were imposible to remove. I tried a propane torch and it did not get them hot enough. I had to use a oxygen/acetylene to get them red hot and they still barley came off. You could take your car to a shop and have them crack the nuts if you still can't get them or you could get new headers and cut the bolts.
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1994 mustang gt
Zex 75-125 shot, BBK equel lentgh headers, off road x-pipe, flowmaster 2 chamber. bbk underdrives, FMS 3:73, MSD 6al ignition, BBK cold air induction, 70mm throttle body, C&L mass air, K&N cone. Pro 5.0.
96 corba rear buber, 1998 cobra wheels 17/8, BFG Comp TA ZR 275/40 rear,245/45 front
Best ET 13.24@105.5
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