I'm wrapping up my front suspension upgrade (Hotchkis TVS) and have mocked up the stage 2 slider disc brakes (11.75" rotors) from Dr. Diff. I will be getting the wheel vyntiques chrysler police wheel front in 15x7 and rear in 15x8. I get one shot at this since i can't return the wheels if they don't fit. 15x7 is only available w/ 4" BS and rear is available in 4" or 4.5" BS. can anyone help me with the BS? Thanks in advanced.