The top 2 studs on the engine block for the a/c compressor bracket broke off leaving the studs inside. I only have two bolts on the bottom of the bracket to fasten it to engine block.

I am not sure but I think I saw some thing like 'insert' that maybe one can replace the insert instead of trying to remove the sheared studs? I could not find anything like 'insert' with the part diagrams. Anyone know anything about it or know what I am talking about. If the 'insert' can be replaced - how can it be done?

Thanks.