Removing the rear subframe on my S14 to add Subframe Risers.
However, upon removal 3 out of the 4 OEM metal sleeves that reside inside the OEM bushing seized to the subframe studs.
I conducted a search for help/tips removing the subframe. However, no similar problems were discovered.
Pictures:

Bushing center Sleeve seized to the Subframe stud.
My Question: How can I remove this seized metal sleeve without damaging the stud?
Any help is greatly appreciated.
Alex