This is just an idea, as I dont know how long the CV axle is. But a rear CV Axle from a Buick Rendezvous AWD/Pontiac Aztek AWD/ or the U-Van AWD Chevy Uplander/Venture/Pontiac Montana/Buick Terraza/Oldsmobile Silhouette/Saturn Relay is a really long axle. Not sure how long, but pretty long.
Autozone shows the Axle length at 31.5 inchs Extended, 28.33 inchs compressed
https://www.autozone.com/drivetrain/cv-axle/p/duralast-gold-rear-driver-or-passenger-side-cv-axle-9407n/401549_0_0
I have a bad one sitting in my garage from a Saturn Relay AWD that I am rebuilding. This is the only reason I had the idea.
I do know the HUB stub should be a standard size, as the front and rear HUBs for the AWD are the same.
You would have to replace the inboard Tri-Pot as its female. Or pull the end stub out of the rear axle and use it.
My thought was that you replace the Female Tri-Pot, and the overall compressed length, because of the Axle stub is now included, should bring you right out to where you need to be.
But this is just a best guess..