Drilling axels and drums from SBP to LBP ??

my front drums are drilled been 7.40 with them no problems..back axles drilled on brother in law car been 6.20 no problem....i'll get you some pics tomm. since i already have the wheels off..also i plan to remove the front drums soon (real) soon if you are not in a hurry i'll sell you my stuff..lol will get pics tomm. mike:D