Installing Gabriel Hijackers onto TB/Envoy

For anyone interested an air-adjustable rear shock setup for their OEM sprung Envoy, I'm attempting to install a pair of Gabriel Hijackers (#49213) that are actually for the old (Jimmy) style Envoy. The thread link is below, located in the Chevrolet Trailblazer section:

http://www.automotiveforums.com/vbulletin/showthread.php?p=6822252#post6822252

As an update, the install is complete and my Envoy XL has new air shocks! Took a bit of figuring things out, but all in all it was a fairly straightforward swap from the OEM Bilsteins. I can definitely feel more body control now. Read the above thread for the whole story. Please let me know if you have questions or if I've forgotten something. Thanks!