I have a 2008 X5 that is supposedly in need of a new transmission. It has a GA6HP19Z in it and I have found a GA6HP26Z transmission. The only difference is in the torque converter it says. Can this transmission be used in my car? Would i need to swap torque converters or is this at all possible. The 26Z is supposed to be a more sturdier transmission with more torque. Any help would be appreciated.

Thanks