Done now, and to my eye the caliper clearances around the rotor do match the clearances on the passenger side brakes. The passenger caliper went on right out of the box okay, with no rubbing, so I am thinking that was a pretty good guide. Is the angle right, as determined by the home-ground bosses? Looks parallel, rotor-to-caliper, again using just my eyeball. The 2 bosses on the caliper are the same to within .002", measured inside (ground) to outside (left alone). And parallel enough that when the micrometer jaw is placed flat against the factory end of a boss, the other jaw shows flat against the ground end. I think overall I have taken it from bad to better. Thanks for the post, it helps.