Allpar published an interesting piece earlier this week wondering if the JL Wranglers will be forced to grow length wise. They had help from a former Jeep engineer.
The new to JL 8 speed transmission is going to force Jeeps hand one way or another. Because the TorqueFlite 8 speed transmission is longer they're either forced to shorten the driveline or lengthen the truck.
Former Jeep Engineer Bob Sheaves writes: “The problem in the short-wheelbase Wrangler is the assembled length of the drivetrain, and suspension travel not allowing a propshaft to fit.”
It's suggested that Jeep could potentially shorten the transfer case instead and leave the JL's wheelbase unchanged from JK. They could also do both...