the trackick is 23 spline but smaller diameter then then the Kia and volvo. Easiest thing for a Kia owner to do would be to swap in a trackick 4-speed (using their bellhousing and torque converter), and use one of the Kicker doublers or the trackick T-case with some reduction gears.

If a trackick owner wants T-case flanges they could use sami flanges on their T-case.

I made an adapter to mount a toyota case to the volvo transmission and I have the 4.7 gears for it. I have a 22R laying around and was thinking of putting that combo in my sami, dont think it has been done before. That would be a sweet combo off road and plenty of power for the street.