I can swap gear sets, but we do not have the tuning capability to tell the TCM that the gear ratios have changed. Without that tuning, you would get a gear ratio mismatch trouble code....
Thanks for the info. That's unfortunate, I'd love to have the other ratios, much better IMO. Personally I don't need a stronger trans for my 4.7L that is NA but good to know you can do this for the other guys.