Strouty
Newbie
I went by thickness, the thicker one was on the rear, it was about one third thicker than the other one. It does look like the length is opposite though, these are AC Delco shoes too. It was an instant difference, the parking brake worked and there was no sticking or locking up. In the original configuration during adjustment, when turning the wheel by hand, it would turn, then lock up tight, except the adjuster wasn’t tight, so it would have to be backed off and then there were barely any rear brakes with no e-brake.