I just assembled some this weekend!
It was too tough to use those pictures alone. Many rockers have numbers on them, that's what unlocked the secret for me.
I found out from this thread:
https://www.chevytalk.org/fusionbb/showtopic.php?tid/257275/Rear RE LI RI LE RE LI RI LE RE LI RI LE Front
Rear 8, 5, 6, 7, 8, 5, 6, 7, 8, 5, 6, 7 Front
Note: my old rockers had an extra 8 in front of all those numbers.