just looking in my wagner brake master catalog at a 97 chrysler with 4 wheel discs shows a 15/16" dia. master bore with 60mm [2.364 dia.] front calipers and 34mm[ 1.3396 dia.] rear caliper bores. i'm not sure on the rotor size or the car weight, but that is with abs and 16" wheels. also not sure if this info is relevant in this discussion or not,just something to ponder.