Basic door lock keying 101

about how many cylinders does that pile-o-pins represent? Is there a difference between the different manufacturers, (gm, ford mopar)? I probably have five or six old gm's laying around and need to rekey some mopar doors.


Probably only about 5 locks worth of pins and springs in the pile. Each lock has five holes, each hole has a lock pipn, follower pin and spring. I don't know what GM lock parts are like as I am not a locksmith. I just got into them as a kid watching Robert Wagner on TV and learned a few tricks. ;)