I have a 1999 Malibu and we could not get the caliber bracket bolts loose so we could remove the bracket and change the rotors. The only thing we could do is burn them off. Does anyone by chance know what size those bolts are and what grade they are? The local dealership sells them for 14 bucks each but they won't tell me the specs on the bolts. I have everything ready to go back together so I need the bolts asap.Thanks for any help offered.