Nick, Your dad's saloon for 89 has the M20 motor and the 4HP22 tranny. My US version saloon is the same. For touring, it depends on the year.
For Euro 95 touring (built date 94 and 95), manual tranny is S5D 310Z thats a Getrag that is the same as the US E36 M3 3.0 car. Late E34 and early E39 tourings auto tranny are EH-4HP24 (these are expensive to fix when they break!).