i purchase a set of calipers and bracket to perform my 12" brake upgrade. i got everything needed from ebay except the bolts that secure the caliper bracket to the spindle (12mm of the camaro). i dont have easy access to taping the bracket to 14mm so i bought a set of those sleeves. do anyone no the dimension of the bolts that would work? would m12x1.75x40mm work - grade 8 bolts from the auto parts store? the dealer wants $4.80 per bolt. shipping from michigan, but i cant wait! additionally, the bolts from the store are threaded all the way.